Latest issue: Volume 30, Number 17, 7 September 1997 (L593-L606, 5887-6204)

Forthcoming Articles

Volume 30, 1997 (Tables of Contents only)

Number 17, 7 September (L593-L606, 5887-6204)

Number 16, 21 August (L555-L592, 5593-5886)

Number 15, 7 August (L479-L554, 5245-5592)

Number 14, 21 July (L443-L478, 4895-5244)

Number 13, 7 July (L429-L442, 4449-4894)

Number 12, 21 June (L393-L428, 4139-4448)

Number 11, 7 June (L347-L392, 3741-4138)

Number 10, 21 May (L301-L346, 3279-3740)

Number 9, 7 May (L255-L300, 2895-3278)

Number 8, 21 April (L203-L254, 2601-2894)

Number 7, 7 April (L149-L202, 2281-2600)

Number 6, 21 March (L113-L148, 1791-2280)

Number 5, 7 March (L77-L112, 1347-1790)

Number 4, 21 February (L41-L76, 1023-1346)

Number 3, 7 February (L27-L40, 767-1022)

Number 2, 21 January (L15-L26, 353-766)

Number 1, 7 January (L1-L14, 1-352)

Journal Archive

Volume 29 (1996)

Journal of Physics A: Mathematical and General

Volume 30, Number 1, 7 January 1997

LETTERS TO THE EDITOR

Induced writhe in linked polygons (L1-L5)
Myrlene Gee and Stuart G Whittington

Damage spreading and dynamic stability of kinetic Ising models (L7-L13)
Thomas Vojta

PAPERS

STATISTICAL

Predictability in the large: an extension of the concept of Lyapunov exponent (1-26)
E Aurell, G Boffetta, A Crisanti, G Paladin and A Vulpiani

Action diffusion for symplectic maps with a noisy linear frequency (27-36)
A Bazzani, S Siboni and G Turchetti

Site-disordered spin systems in the Gaussian variational approximation (37-62)
David S Dean and David Lancaster

Computing the roughening transition of Ising and solid-on-solid models by BCSOS model matching (63-80)
M Hasenbusch and K Pinn

Some statistical properties of the even and the odd negative binomial states (81-97)
Amitabh Joshi and A-S F Obada

The 3D multi-layered solvable six-vertex model: The phase diagram (99-116)
V Popkov and B Nienhuis

Hofstadter rules and generalized dimensions of the spectrum of Harper's equation (117-128)
Andreas Rüdinger and Frédéric Piéchon

A relation between billiard geometry and the temperature of its eigenvalue gas (129-141)
Hans-Jürgen Stöckmann, Ulrich Stoffregen and Michael Kollmann

MATHEMATICAL

Asymptotic analysis of time singularities for a class of time-dependent Hamiltonians (143-171)
S Abenda

Scattering from the potential barrier $V=cosh^{-2}\omega x$ from the path integration over $SO(1,2)$ (173-184)
H Ahmedov and I H Duru

Lie symmetries and multiple solutions in $\lambda-\omega$ reaction-diffusion systems (185-194)
J F R Archilla, J L Romero, F Romero Romero and F Palmero

Extended phase spaces and twistor theory (195-209)
A Bette and S Zakrzewski

Hamiltonian character of the motion of the zeros of a polynomial whose coefficients oscillate over time (211-218)
F Calogero and J-P Françoise

Determinant representation for a quantum correlation function of the lattice sine - Gordon model (219-244)
Fabian H L Eßler, Holger Frahm, Alexander R Its and Vladimir E Korepin

A model for classical spacetime coordinates (245-249)
David B Fairlie and Renat Zhdanov

Correlation functions of the SU(2)-invariant Thirring model with a boundary (251-263)
Bo-Yu Hou, Kang-Jie Shi, Yan-Shen Wang and Wen-Li Yang

Ionization of atoms and molecules by short, strong laser pulses (265-275)
V Kostrykin and R Schrader

Constrained Hamiltonian systems as implicit differential equations (277-293)
Giuseppe Marmo, Giovanna Mendella and Wlodzimierz M Tulczyjew

Eigenstate structures around a hyperbolic point (295-315)
S Nonnenmacher and A Voros

The role of tank-treading motions in the transverse migration of a spheroidal vesicle in a shear flow (317-329)
Piero Olla

Soliton solutions for a spin chain with an easy plane and the method of Riemann problem with zeros (331-344)
Hong Yue and Nian-Ning Huang

GENERAL

A phase diagram for sheared particle models (345-352)
D B Nicolaides and L V Woodcock

Journal of Physics A: Mathematical and General

Volume 30, Number 2, 21 January 1997

LETTERS TO THE EDITOR

Symmetries of factorization chains for the discrete Schrödinger equation (L15-L21)
Vyacheslav Spiridonov

Hidden symmetry of the differential calculus on the quantum matrix space (L23-L26)
S Sinel'shchikov and L Vaksman

PAPERS

STATISTICAL

Two-parameter deformed multimode oscillators and q-symmetric states (353-359)
W-S Chung

Correlation functions in the XXO Heisenberg chain and their relations with spectral shapes (361-370)
F Colomo, A G Izergin and V Tognetti

Characterization of a periodically driven chaotic dynamical system (371-383)
A Crisanti, M Falcioni, G Lacorata, R Purini and A Vulpiani

Continuum Derrida approach to drift and diffusivity in random media (385-396)
D S Dean, I T Drummond and R R Horgan

Pre-roughening induced deconstruction in Si and Ge(001) type crystal surfaces (397-404)
Marcel den Nijs

Evidence for a first-order transition in a plaquette three-dimensional Ising-like action (405-412)
D Espriu, M Baig D A Johnston and Ranasinghe P K C Malmini

Universality class of trails in two dimensions (413-421)
Ihnsouk Guim, Henk W J Blöte and Theodore W Burkhardt

Continuum dual theory of the transition in 3D lattice superconductor (423-429)
Igor F Herbut

A multilayer contact process (431-443)
M Hoyuelos, E V Albano and H O Mártin

The first quantum correction to the fourth virial coefficient for fluids in d-dimensionality for the square-well potential at the classical limit (445-465)
Nagat Abdel Rahman Hussien and Abdel Azim Abdel Hady Yahya

Two-dimensional polymer configuration via mean-field theory (467-483)
Gerald G Pereira

Griffiths singularities in the two-dimensional diluted Ising model (485-493)
Juan J Ruiz-Lorenzo

Ground state entropy and the q = 3 Potts antiferromagnet on the honeycomb lattice (495-500)
Robert Shrock and Shan-Ho Tsai

Non-periodic long-range order for one-dimensional pair interactions (501-505)
Aernout C D van Enter and Boguslaw Zegarlinski

Statistical properties of the set of sites visited by the two-dimensional random walk (507-531)
F van Wijland, S Caser and H J Hilhorst

Symmetry decomposition of potentials with channels (533-557)
N D Whelan

MATHEMATICAL

Problem of two Coulomb centres at large intercentre separation: asymptotic expansions from analytical solutions of the Heun equation (559-571)
A A Bogush and V S Otchik

Green dyadics in uniaxial bianisotropic-ferrite medium by cylindrical vector wavefunctions (573-585)
Dajun Cheng, Wei Ren and Ya-Qiu Jin

Complete analysis of bifurcations in the axial gyrostat problem (587-601)
Antonio Elipe, M Arribas and A Riaguas

Projection operator approach to constrained systems (603-617)
Jan Govaerts

An approach to generate superextensions of integrable systems (619-632)
Xing-Biao Hu

Lie group formalism for difference equations (633-649)
D Levi, L Vinet and P Winternitz

Deformed boson algebras and the quantum double construction (651-659)
D S McAnally and I Tsohantjis

Obtaining holonomy from curvature (661-671)
Brett McInnes

Structure of avoided crossings for eigenvalues related to equations of Heun's class (673-687)
S Yu Slavyanov and N A Veshev

A formula for Nijenhuis torsion and the uniqueness aspect of the inverse problem of Lagrangian dynamics (689-695)
G Thompson

Nonlinear phase-integral approximations of stationary waves in nonhomogeneous systems (697-710)
Karl-Erik Thylwe and Harry Dankowicz

Graded reflection equations and the one-dimensional small-polaron open chain (711-715)
Huan-Qiang Zhou

GENERAL

Multi-vortex solution in the Sutherland model (717-724)
I Andric, V Bardek and L Jonke

Quantum mechanics and elements of reality inferred from joint measurements (725-732)
Adán Cabello and Guillermo García-Alcaine

Phase-space structure of a new integrable system related to hydrogen atoms in external fields (733-753)
M J Rakovic and Shih-I Chu

COMMENT

Analytical inversion of a particular type of banded matrix (755-763)
S Simons

CORRIGENDA

Transient waves generated by a source on a circle (765-766)
V V Borisov and I I Simonenko 1994 J. Phys. A: Math. Gen. 27 6243-52

The measure of the orthogonal polynomials related to Fibonacci chains: the periodic case (765-766)
W Lang 1996 J. Phys. A: Math. Gen. 29 4169-85

Electronic Journals v1.2a. Copyright © IOP Publishing Ltd. 1995, 1996, 1997. All rights reserved.

Journal of Physics A: Mathematical and General Volume 30, Number 3, 7 February 1997 LETTERS TO THE EDITOR Nambu tensors and commuting vector fields (L27-L33) J Hietarinta Results for some inversion problems for classical continuous and discrete orthogonal polynomials (L35-L40) A Zarzo, I Area, E Godoy and A Ronveaux PAPERS STATISTICAL Critical behaviour of mixed Heisenberg chains (767-778) F C Alcaraz and A L Malvezzi Dissipative particle dynamics for interacting multicomponent systems (779-784) P V Coveney and P Español Multiscaling of the graph length in Coupled Map Lattices (785-793) Ayse Gorbon and Ayse Erzan Magnetotransport in the 2D Lorentz model: linear and nonlinear effects of a weak electric field (795-809) J Piasecki, Alex Hansen and E H Hauge Localization transition of a dynamic reaction front (811-818) M J E Richardson and M R Evans Random walks and Schrödinger's equation in (2+1) dimensions (819-830) G N Ord and A S Deakin Superconducting correlation in the one-dimensional t- J model with anisotropic spin interaction (831-840) J Shiraishi, Y Morita and M Kohmoto A sufficient condition for two long-range orders coexisting in a lattice many-body system (841-848) Guang-Shan Tian Analytic Bethe ansatz for 1D Hubbard model and twisted coupled XY model (849-865) Ruihong Yue and Tetsuo Deguchi MATHEMATICAL Centre and representations of $U_q(sl(2|1))$ at roots of unity (867-880) B Abdesselam D Arnaudon and M Bauer On the spectrum of the p-adic position operator (881-889) Sergio Albeverio, Roberto Cianci and Andrew Khrennikov A study of periodic transitions in smectic C liquid crystals (891-901) P J Barratt and B R Duffy Anyonic realization of the quantum affine Lie superalgebras $U_q(\hat{A}(M-1,N-1))$ (903-914) L Frappat, A Sciarrino, S Sciuto and P Sorba Fractal properties of spacing distributions (915-926) Chris Greenman Is the level spacing distribution of the infinite-dimensional harmonic oscillator that of a Poisson process? (927-936) Chris Greenman Lifts of one-dimensional systems: I. Hyperbolic behaviour (937-948) Tore M Jonassen Macro-deformed coherent states and the q-analogue quantized field (949-971) William C Kimler IV and Charles A Nelson Generalized fractional Fourier transforms (973-981) Shutian Liu, Jiuxing Jiang, Yan Zhang and Jingde Zhang Transfer matrices and tridiagonal-block Hamiltonians with periodic and scattering boundary conditions (983-997) Luca Molinari Involutive symmetries, supersymmetries and reductions of the Dirac equation (999-1010) J Niederle and A G Nikitin Dynamical capture in quantum mechanics (1011-1015) M Sassoli de Bianchi and Ph A Martin Singularity confinement analysis of integrodifferential equations of Benjamin - Ono type (1017-1022) K M Tamizhmani, A Ramani and B Grammaticos This Journal's Home Page | Journal Scope | Forthcoming Articles Tables of Contents | Editorial Board | How to Submit | Abstracted In Ordering Information Electronic Journals v1.2a. Copyright © IOP Publishing Ltd. 1995, 1996, 1997. All rights reserved.

Journal of Physics A: Mathematical and General Volume 30, Number 4, 21 February 1997 LETTERS TO THE EDITOR Solving the Schrödinger equation for the Sherrington - Kirkpatrick model in a transverse field (L41-L47) David Lancaster and Felix Ritort Entropic uncertainty relations for the infinite well (L49-L54) V Majerník and L Richterek Ginzburg - Landau theory of the cluster glass phase (L55-L61) Th M Nieuwenhuizen and C N A van Duin Examples of quaternionic and Kähler structures in Hamiltonian models of nearly geostrophic flow (L63-L68) V N Rubtsov and I Roulstone Car-oriented mean-field theory for traffic flow models (L69-L75) Andreas Schadschneider and Michael Schreckenberg PAPERS STATISTICAL Anomalous diffusion in linear shear flows (1023-1030) Albert Compte, David Jou and Yoshishige Katayama Exact diffusion constant for the one-dimensional partially asymmetric exclusion model (1031-1046) B Derrida and K Mallick Statistical mechanics of the multi-constraint continuous knapsack problem (1047-1058) Jun-ichi Inoue Rigorous study of the spin-1/2 Ising model in a layered magnetic field at low temperatures (1059-1068) Lahoussine Laanait and Najem Moussa Time dependent Ginzburg - Landau model in the absence of translational invariance. Non-conserved order parameter domain growth (1069-1088) Umberto Marini Bettolo Marconi and Alberto Petri Fractional diffusion: exact representations of spectral functions (1089-1093) R Metzler and T F Nonnenmacher Néel order in the ground state of Heisenberg antiferromagnetic chains with long-range interactions (1095-1100) J Rodrigo Parreira, O Bolina and J Fernando Perez A renormalization group study of a class of reaction-diffusion models, with particles input (1101-1114) Pierre-Antoine Rey and Michel Droz Integrability of the one-dimensional Bariev model (1115-1133) Masahiro Shiroishi and Miki Wadati Radiation damping of a quantum particle with a spin magnetic moment (1135-1141) Anatoly Yu Smirnov Hierarchical diffusion, aging and multifractality (1143-1160) Hajime Yoshino MATHEMATICAL The superconducting half-space with a vortex: closed form results (1161-1165) Mark W Coffey Non-holonomic Lagrangian systems in jet manifolds (1167-1190) Manuel de León, Juan C Marrero and David Martín de Diego Excitations of vortices in Abelian Higgs model (1191-1198) T Dobrowolski Dual self-transform function (1199-1202) Jianwen Hua, Liren Liu and Guoqiang Li The integrability of the two-state problem in terms of confluent hypergeometric functions (1203-1208) A M Ishkhanyan Completeness of Bethe's states for the generalized XXZ model (1209-1226) Anatol N Kirillov and Nadejda A Liskova Systematic perturbation theory for sine - Gordon solitons without use of inverse scattering methods (1227-1241) E Mann About the spacing functions of the three matrix ensembles (1243-1251) Madan Lal Mehta and Akhilesh Pandey Representation of the three-dimensional rotation operator in the anisotropic Gaussian basis (1253-1257) Rashid G Nazmitdinov and L M Robledo A realization of quantum algebras - some applications (1259-1271) M K Patra Aharonov - Bohm scattering on two parallel flux lines of the same magnitude by the method of path integration (1273-1285) Shang-Wu Qian, Zhi-Yu Gu and Guo-Qiang Xie Supersymmetric quantum mechanics based on higher excited states (1287-1294) Marko Robnik The canonical form of the $E\otimes\epsilon$ Jahn - Teller Hamiltonian (1295-1302) M Szopa and A Ceulemans GENERAL Nonrelativistic approximations of the relativistic equations and subbarrier relativistic effects (1303-1321) D Anchishkin Quantum Zeno effect and light - dark periods for a single atom (1323-1334) Almut Beige and Gerhard C Hegerfeldt On the existence of linear non-reciprocal bi-isotropic (NRBI) media (1335-1344) R E Raab and A H Sihvola CORRIGENDUM Non-classical photon statistics for two-mode optical fields (1345-1345) Arvind and Mukunda N 1996 J. Phys. A: Math. Gen. 29 5855-72 This Journal's Home Page | Journal Scope | Forthcoming Articles Tables of Contents | Editorial Board | How to Submit | Abstracted In Ordering Information Electronic Journals v1.2a. Copyright © IOP Publishing Ltd. 1995, 1996, 1997. All rights reserved.

Journal of Physics A: Mathematical and General Volume 30, Number 5, 7 March 1997 LETTERS TO THE EDITOR Large-scale probability density function for scalar field advected by high Reynolds number turbulent flow (L77-L82) Sergei Fedotov Pólya states of quantized radiation fields, their algebraic characterization and non-classical properties (L83-L89) Hong-Chen Fu Absorption time in certain urn models (L91-L94) Adam Lipowski Non-local symmetries via Darboux transformations (L95-L100) Sen-Yue Lou and Xing-Biao Hu Walks with ghosts (L101-L103) G B Tupper and F G Scholtz Off-diagonal density profiles and conformal invariance (L105-L111) Loïc Turban and Ferenc Iglói PAPERS STATISTICAL Aperiodic spin chain in the mean field approximation (1347-1362) Pierre Emmanuel Berche and Bertrand Berche Selection and relaxation of single modes in molecular dynamics of complex nonlinear systems (1363-1374) A Campa and A Giansanti Spontaneously ordered motion of self-propelled particles (1375-1385) András Czirók, H Eugene Stanley and Tamás Vicsek New surface critical exponents in the spherical model (1387-1402) D M Danchev, J G Brankov and M E Amin Generalization and chaos in a layered neural network (1403-1414) David R C Dominguez and W K Theumann Geometry and topology of fracture systems (1415-1444) O Huseby, J-F Thovert and P M Adler Study of polymers with crossing bonds on the square lattice (1445-1455) Kleber D Machado and Jürgen F Stilck New Monte Carlo algorithms for interacting self-avoiding walks (1457-1469) P P Nidras and R Brak The t-expansion study of critical phenomena in quantum systems (1471-1482) L Samaj, P Kalinay, P Markos and I Travenec Mean field phase diagrams for one-electron molecules (1483-1493) Pablo Serra and Sabre Kais Mapping from 1/ r Hubbard model to Gross - Neveu model and exclusion statistics (1495-1502) Yue-lin Shen and Mo-lin Ge Local transport coefficients for chaotic systems (1503-1525) A N Yannacopoulos and G Rowlands MATHEMATICAL Properties of equations of the continuous Toda type (1527-1547) E Alfinito, G Profilo and G Soliani Reversing symmetry group of $GL(2,Z$ and $PGl(2,Z)$ matrices with connections to cat maps and trace maps (1549-1573) Michael Baake and John A G Roberts A generalized Lagrange equation in implicit form for non-conservative mechanics (1575-1590) F Barone, R Grassini and G Mendella Generalized integrable hierarchies and Combescure symmetry transformations (1591-1603) L V Bogdanov and B G Konopelchenko $R^{2n+1}$ is a universal contact manifold for reduction (1605-1612) Manuel de León, Juan C Marrero and Gijs M Tuynman Eigenvalues of Casimir invariants for unitary irreps of $U_q(gl(m|n))$ (1613-1627) M D Gould and J R Links Quantum motion on the three-dimensional sphere: the ellipso-cylindrical bases (1629-1657) C Grosche, Kh H Karayan, G S Pogosyan and A N Sissakian Semiclassical analysis of tunnelling splittings in periodically driven quantum systems (1659-1677) H J Korsch, B Mirbach and B Schellhaaß On the classical Yang - Baxter equation for Clifford sequences (1679-1684) Frank Leitenberger Families of interrelated Schrödinger equations (1685-1688) Harry A Mavromatis The matrizant and Saxon - Hutner theorem (1689-1694) Ivaïlo M Mladenov A causal statistical family of dissipative divergence-type fluids (1695-1709) Oscar A Reula and Gabriel B Nagy WKB to all orders and the accuracy of the semiclassical quantization (1711-1718) Marko Robnik and Luca Salasnich WKB expansion for the angular momentum and the Kepler problem: from the torus quantization to the exact one (1719-1729) Marko Robnik and Luca Salasnich An improved procedure for solving asymptotic equations (1731-1737) M R H Rudge and D M Tiernan A new approach to the nonlinear connection associated with second-order (and higher-order) differential equation fields (1739-1743) D J Saunders New integrable systems related to the relativistic Toda lattice (1745-1761) Yuri B Suris Intrinsic ordering of quasienergy states for mixed regular/chaotic quantum systems: zeros of the Husimi distribution (1763-1773) H Wiescher and H J Korsch Transformation between a hydrogen atom and a harmonic oscillator of arbitrary dimensions (1775-1783) Gao-Jian Zeng, Shi-Lun Zhou, Sheng-Mei Ao and Fa-Sheng Jiang COMMENTS Comments on `The Dalgarno - Lewis method as a perturbation theory' by Nandi et al (1996 J. Phys. A: Math. Gen. 29 1101) and on `Alternate approach to non-relativistic perturbation theory' by Kim and Sukhatme (1992 J. Phys. A: Math. Gen. 25 L647) (1785-1787) C K Au Reply to comments by Au (1789-1790) T K Nandi, P K Bera, M M Panja and B Talukdar This Journal's Home Page | Journal Scope | Forthcoming Articles Tables of Contents | Editorial Board | How to Submit | Abstracted In Ordering Information Electronic Journals v1.2a. Copyright © IOP Publishing Ltd. 1995, 1996, 1997. All rights reserved.

Journal of Physics A: Mathematical and General Volume 30, Number 6, 21 March 1997 LETTERS TO THE EDITOR The three-vertex in the closed half-string field theory and the general gluing and resmoothing theorem (L113-L116) F Anton, A Abdurrahman and J Bordes Time-reversal symmetry and random polynomials (L117-L123) Daniel Braun, Marek Kus and Karol Zyczkowski Algebraic aspects of quantum statistics (L125-L130) Enrico Celeghini, Mario Rasetti and Giuseppe Vitiello High-order equations of motion in quantum mechanics and Galilean relativity (L131-L135) W I Fushchych and Z I Symenoh New examples of solvable non-uniform spin lattices (L137-L142) N G Inozemtseva and V I Inozemtsev Quasiperiodic icosahedral tilings from the six-dimensional bcc lattice (L143-L147) Z Papadopolos, R Klitzing and P Kramer PAPERS STATISTICAL Correlated percolation and the correlated resistor network (1791-1801) Paul J M Bastiaansen and Hubert J F Knops Quantum Monte Carlo simulations of a particle in a random potential (1803-1816) Hsuan-Yi Chen and Yadin Y Goldschmidt Two-point spectral correlations for the square billiard (1817-1830) R D Connors and J P Keating Finite-size corrections of an integrable chain with alternating spins (1831-1841) B-D Dörfel and St Meissner Functional integral approach to multipoint correlators in two-dimensional critical systems (1843-1848) V I Fernández and C M Naón Statistical physics models of aggregation phenomena (1849-1862) T Huillet On uniqueness of the jump process in event enhanced quantum theory (1863-1880) A Jadczyk, G Kondrat and R Olkiewicz Thermodynamics of correlated electrons with bond charge and Hubbard interaction in one dimension (1881-1886) G Jüttner, A Klümper and J Suzuki Unifying iteration rule for fractal objects (1887-1896) A Kittel, J Parisi, J Peinke, G Baier, M Klein and O E Rössler Thermodynamics of the quantum Perk - Schultz model (1897-1912) A Klümper, T Wehner and J Zittartz Integrable three-body problems with two- and three-body interactions (1913-1923) Yasushi Komori and Kazuhiro Hikami Random sequential adsorption of dimers on fractal structures (1925-1933) M S Nazzarro, A J Ramirez Pastor, J L Riccardo and V Pereyra Stationary-state skewness in KPZ-type growth (1935-1952) John Neergaard and Marcel den Nijs Density-functional approach to the theory of dipolar fluids (1953-1965) M A Osipov, P I C Teixeira and M M Telo da Gama Random networks of crosslinked manifolds (1967-1977) Christian Roos, Annette Zippelius and Paul M Goldbart Series analysis of tricritical behaviour: mean-field model and partial differential approximants (1979-1989) Zaher Salman and Joan Adler MATHEMATICAL Symbolic dynamics and periodic orbits for the cardioid billiard (1991-2020) A Bäcker and H R Dullin Invariance quantum groups of the deformed oscillator algebra (2021-2026) Jacqueline Bertrand and Michèle Irac-Astaud Quantum principal bundles and corresponding gauge theories (2027-2054) Mico Durdevic A group theoretic approach to a class of second-order ordinary differential equations not possessing Lie point symmetries (2055-2068) K S Govinder and P G L Leach Quasiclassical eigenvalues (2069-2076) James S Howland Exact solutions of non-autonomous quantum systems with semisimple Lie algebraic structure (2077-2084) Quan-Lin Jie, Shun-Jin Wang and Lian-Fu Wei The SU(2) instanton and the adiabatic evolution of two Kramers doublets (2085-2092) M T Johnsson and I J R Aitchison Non-pointlike particles in harmonic oscillators (2093-2101) Achim Kempf Yang - Lee edge singularity on a class of tree-like lattices (2103-2107) Milan Knezevic and Suncica Elezovic-Hadzic Breaking SO(3) into its closed subgroups by Higgs mechanism (2109-2125) Mehmet Koca, Ramazan Ko c and Muataz Al-Barwani Separation of variables for the $D_n$-type periodic Toda lattice (2127-2138) Vadim B Kuznetsov Two-component eigenfunction expansion for open systems described by the wave equation I: completeness of expansion (2139-2151) P T Leung, S S Tong and K Young Two-component eigenfunction expansion for open systems described by the wave equation II: linear space structure (2153-2162) P T Leung, S S Tong and K Young Quantum charged spinning particles in a strong magnetic field (a quantal guiding centre theory) (2163-2179) P Maraner Spectral density distribution moments of N-electron Hamiltonians in the low-density limit (2181-2196) Josep Planelles, Fernando Rajadell and Jacek Karwowski Estimation numérique de la vitesse de décroissance des spectres de puissance Numerical estimation of the fall-off rates of spectral densities (2197-2209) Cyrille Rustom and Jacques Bélair Potential symmetries and direct reduction methods of order two (2211-2217) Giuseppe Saccomandi Berry phase in generalized chiral $QED_2$ (2219-2233) Fuad M Saradzhev On some integrable systems related to the Toda lattice (2235-2249) Yuri B Suris Non-local ansätze for nonlinear heat and wave equations (2251-2262) Ivan Tsyfra GENERAL The vortex dynamics analogue of the restricted three-body problem: advection in the field of three identical point vortices (2263-2280) Z Neufeld and T Tél This Journal's Home Page | Journal Scope | Forthcoming Articles Tables of Contents | Editorial Board | How to Submit | Abstracted In Ordering Information Electronic Journals v1.2a. Copyright © IOP Publishing Ltd. 1995, 1996, 1997. All rights reserved.

Journal of Physics A: Mathematical and General Volume 30, Number 7, 7 April 1997 LETTERS TO THE EDITOR Quantum Heisenberg - Weyl algebras (L149-L154) Angel Ballesteros, Francisco J Herranz and Preeti Parashar Deterministic spin models with a glassy phase transition (L155-L159) I Borsari, M Degli Esposti, S Graffi and F Unguendoli Equivalent classes of critical circles (L161-L165) N Buric, M Mudrinic and K Todorovic Free energy of a semiflexible polymer in a tube and statistics of a randomly-accelerated particle (L167-L172) Theodore W Burkhardt On a certain lower bound to the effective potential of $\lambda\phi^4$ (L173-L176) Marnix Coppens, Henri Verschelde, Sigurd Schelstraete and Mark Vanderkelen Discrete symmetries and spectral statistics (L177-L181) J P Keating and J M Robbins Explicit formula for the multiple generating function of product of generalized Laguerre polynomials (L183-L186) Poh-Aun Lee The glassy transition of the frustrated Ising lattice gas (L187-L194) Mario Nicodemi and Antonio Coniglio Algebraic Bethe ansatz approach for the one-dimensional Hubbard model (L195-L202) P B Ramos and M J Martins PAPERS STATISTICAL Asymptotic results for the number of multidimensional partitions of an integer and directed compact lattice animals (2281-2285) D P Bhatia, M A Prasad and D Arora Stochastic escape processes from a non-symmetric potential normal form II: the marginal case (2287-2296) Manuel O Cáceres, Miguel A Fuentes and Carlos E Budde Earthquakes in quasistatic models of fractures in elastic media: formalism and numerical techniques (2297-2315) Kan Chen, Ravi Bhagavatula and C Jayaprakash Spin-glass model with uniform biquadratic interactions (2317-2328) Francisco A da Costa, Fernando D Nobre and Carlos S O Yokoi Damage spreading in a two-dimensional Potts ferromagnet in an external field (2329-2344) L da Silva, F A Tamarit and A C N Magalhães Statistics of confined chains. III: Hamiltonian paths (2345-2348) Alain Jaeckel, Jean Sturm and Jean Dayantis An exact learning algorithm for autoassociative neural networks with binary couplings (2349-2352) G Milde and S Kobe Surface free energies, interfacial tensions and correlation lengths of the ABF models (2353-2366) David L O'Brien and Paul A Pearce Preferential trapping on energy landscapes in regions containing deep-lying minima: The reason for the success of simulated annealing? (2367-2389) J Christian Schön MATHEMATICAL Solving forward Lorentz - Dirac-like equations (2391-2402) J M Aguirregabiria The isotropic bounded oscillators (2403-2415) N Aquino A generalized Pancharatnam geometric phase formula for three-level quantum systems (2417-2431) Arvind, K S Mallesh and N Mukunda Explicit determination of a 727-dimensional root space of the hyperbolic Lie algebra $E_{10}$ (2433-2446) O Bärwald and R W Gebert Representation of the Yangian invariant motif and the Macdonald polynomial (2447-2456) Kazuhiro Hikami Travelling waves and dynamic scaling in a singular interface equation: analytic results (2457-2465) Robert Kersner and Mária Vicsek A sufficient condition for the existence of bound states for scalar spherically symmetric potentials (2467-2481) M Lassaut and R J Lombard On the construction of integrable closed chains with quantum supersymmetry (2483-2487) Jon Links and Angela Foerster Berry's transport and minimization of averaged distances (2489-2496) M Maamache, J-P Provost and G Vallée Hyperbolicity in a double-well potential (2497-2508) B Stegemerten and P Eckelt Quantization on $Z_M$ and coherent states over $Z_M \times Z_M$ (2509-2517) J Tolar and G Chadzitaskos On the similarity solution of the fragmentation equation (2519-2543) Richard P Treat Wavefunctions and minimum uncertainty states of the harmonic oscillator with an exponentially decaying mass (2545-2556) Chung-In Um, In-Han Kim, Kyu-Hwang Yeon, Thomas F George and Lakshmi N Pandey GENERAL Novel correlations in two dimensions: Two-body problem (2557-2576) R K Bhaduri, Avinash Khare, J Law, M V N Murthy and Diptiman Sen An NMR rotation operator disentanglement strategy for establishing properties of the Euler - Rodrigues parameters (2577-2584) David J Siminovitch and Simon Habot Behaviour of wavepackets of the 'Dirac oscillator': Dirac representation versus Foldy - Wouthuysen representation (2585-2595) F M Toyama, Y Nogami and F A B Coutinho COMMENT On the non-existence of linear non-reciprocal bi-isotropic (NRBI) media (2597-2600) Werner S Weiglhofer and Akhlesh Lakhtakia This Journal's Home Page | Journal Scope | Forthcoming Articles Tables of Contents | Editorial Board | How to Submit | Abstracted In Ordering Information Electronic Journals v1.2a. Copyright © IOP Publishing Ltd. 1995, 1996, 1997. All rights reserved.

Journal of Physics A: Mathematical and General Volume 30, Number 8, 21 April 1997 LETTERS TO THE EDITOR Conformal invariance studies of the Baxter - Wu model and a related site-colouring problem (L203-L209) F C Alcaraz and J C Xavier Self-fractional Fourier functions and selection of modes (L211-L215) Tatiana Alieva and André M Barbé Uniqueness of Hardy's state for fixed choice of observables (L217-L219) G Kar Stochastic traffic model with random deceleration probabilities: queueing and power-law gap distribution (L221-L227) Dmitri V Ktitarev, Debashish Chowdhury and Dietrich E Wolf Polynomial solutions to the WDVV equations in four dimensions (L229-L232) R Martini and G F Post Surface spin-flop phases and bulk discommensurations in antiferromagnets (L233-L238) C Micheletti, R B Griffiths and J M Yeomans Critical probabilities for diversity and number of clusters in randomly occupied square lattices (L239-L243) I R Tsang and I J Tsang Boundary S-matrices for the open Hubbard chain with boundary fields (L245-L253) Osamu Tsuchiya PAPERS STATISTICAL Error threshold in the evolution of diploid organisms (2601-2607) D Alves and J F Fontanari A random walk approach to the Bak - Sneppen evolution model (2609-2618) L Anton Dissipative mass-accreting quantum oscillator (2619-2635) Marcelo A Marchiolli and Salomon S Mizrahi Dynamics of temporal activity in multi-state neural networks (2637-2652) G M Shim, K Y M Wong and D Bollé Ising transition in the classical ANNNXY model (2653-2668) P Simon Crossover from the dilute to the dense phase for self-repelling polymer chains: finite size effects and relation to zero-component Landau - Ginzburg - Wilson theory (2669-2686) F Rother, L Schäfer and P Grassberger MATHEMATICAL Combinatorial aspects of colour symmetries (2687-2698) Michael Baake On the path integral representation for spin systems (2699-2704) Daniel C Cabra, Ariel Dobry, Andrés Greco and Gerardo L Rossini Hamiltonian versus Lagrangian formulations of supermechanics (2705-2724) José F Cariñena and Héctor Figueroa A linear model of intermediate statistics (2725-2734) A Dasnières de Veigy Complete determination of the singularity structure of zeta functions (2735-2743) E Elizalde Deterministic exclusion process with a stochastic defect: matrix-product ground states (2745-2756) Haye Hinrichsen and Sven Sandow Dual representations of $GL_\infty$ and decomposition of Fock spaces (2757-2781) R Michael Howe Reduction of Jacobi manifolds (2783-2798) A Ibort, M de León and G Marmo Quasi-bi-Hamiltonian systems and separability (2799-2806) C Morosi and G Tondo Model system with periodicity both in energy and time: an unconventional type of zone structure (2807-2810) V N Ostrovsky Multiband Fulton - Gouterman transformation and its application to electron - phonon systems (2811-2823) Matthias Rapp and Max Wagner Quantum averaging II: Kolmogorov's algorithm (2825-2851) Wolfgang Scherer GENERAL Geometric magnetism in massive chaotic billiards (2853-2861) M V Berry and E C Sinclair How chaotic is the stadium billiard? A semiclassical analysis (2863-2888) Gregor Tanner COMMENT The analytic inversion of any finite symmetric tridiagonal matrix (2889-2893) H A Yamani and M S Abdelmonem This Journal's Home Page | Journal Scope | Forthcoming Articles Tables of Contents | Editorial Board | How to Submit | Abstracted In Ordering Information Electronic Journals v1.2a. Copyright © IOP Publishing Ltd. 1995, 1996, 1997. All rights reserved.

Journal of Physics A: Mathematical and General Volume 30, Number 9, 7 May 1997 LETTERS TO THE EDITOR q-oscillator representations of Hermitian braided matrices (L255-L262) M Arik and A Yildiz A numerical study of ultrametricity in finite-dimensional spin glasses (L263-L269) A Cacciuto, E Marinari and G Parisi Diffusional relaxation in random sequential deposition (L271-L276) Eli Eisenberg and Asher Baram Spacetime structures in simple quantum systems (L277-L283) Frank Großmann, Jan-Michael Rost and Wolfgang P Schleich Twisted boundary conditions of quantum spin chains near the Gaussian fixed points (L285-L291) A Kitazawa Observational line broadening and the duration of a quantum jump (L293-L299) L S Schulman PAPERS STATISTICAL On the form factors of relevant operators and their cluster property (2895-2913) C Acerbi, G Mussardo and A Valleriani Competition between one- and two-photon absorption processes (2915-2935) V V Dodonov and S S Mizrahi Critical holes in undercooled wetting layers (2937-2946) G Foltin, R Bausch and R Blossey Bond and site defects in fully frustrated two-dimensional Ising systems (2947-2962) J R Gonçalves, J Poulter and J A Blackman On the convergence to ergodic behaviour of quantum wavefunctions (2963-2974) Ph Jacquod and J-P Amiet Ballot number representation of the percolation probability series for the directed square lattice (2975-2994) Makoto Katori and Norio Inui Multiple phase changes induced by frustration in randomly connected cellular automata (2995-3002) Normand Mousseau Order - chaos transitions in field theories with topological terms: a dynamical systems approach (3003-3020) C Mukku, M S Sriram, J Segar, Bindu A Bambah and S Lakshmibala Non-equilibrium directed diffusion and inherently irreversible heat engines (3021-3027) I M Sokolov and A Blumen MATHEMATICAL The torus parametrization of quasiperiodic LI-classes (3029-3056) Michael Baake, Joachim Hermisson and Peter A B Pleasants Avoided crossings of the quartic oscillator (3057-3067) Karlheinz Bay, Wolfgang Lay and Alexey Akopyan Graded contractions and bicrossproduct structure of deformed inhomogeneous algebras (3069-3086) J A de Azcárraga, M A del Olmo, J C Pérez Bueno and M Santander One-dimensional discrete Stark Hamiltonian and resonance scattering by an impurity (3087-3099) L A Dmitrieva, Yu A Kuperin and Yu B Melnikov An improved algorithm to determine the density of resonance states using the stabilization method (3101-3105) F M Fernández and R Guardiola Symmetry techniques for the Al-Salam - Chihara polynomials (3107-3114) Roberto Floreanini, Jean LeTourneux and Luc Vinet Principles of discrete time mechanics: I. Particle systems (3115-3144) George Jaroszkiewicz and Keith Norton Principles of discrete time mechanics: II. Classical field theory (3145-3163) George Jaroszkiewicz and Keith Norton Matrix product eigenstates for one-dimensional stochastic models and quantum spin chains (3165-3173) Klaus Krebs and Sven Sandow Coherent states measurement entropy (3175-3200) Jaroslaw Kwapien, Wojciech Slomczynski and Karol Zyczkowski The path integration of a relativistic particle on a D-dimensional sphere (3201-3217) De-Hone Lin Traces of the reduced density operators revisited: closed-form formulae (3219-3227) Josep Planelles and Jacek Karwowski A new class of induced localized coherent structures in the (2 + 1)-dimensional nonlinear Schrödinger equation (3229-3233) R Radha and M Lakshmanan On Wick algebras with additional twisted commutation relations (3235-3247) Robert Ralowski The duality relation between Glauber dynamics and the diffusion - annihilation model as a similarity transformation (3249-3259) J E Santos Lie symmetries and infinite-dimensional Lie algebras of certain (1 + 1)-dimensional nonlinear evolution equations (3261-3271) M Senthil Velan and M Lakshmanan A mathematical theory of synchronization by self-feedback (3273-3278) S S Yang and C K Duan This Journal's Home Page | Journal Scope | Forthcoming Articles Tables of Contents | Editorial Board | How to Submit | Abstracted In Ordering Information Electronic Journals v1.2a. Copyright © IOP Publishing Ltd. 1995, 1996, 1997. All rights reserved.

Journal of Physics A: Mathematical and General Volume 30, Number 10, 21 May 1997 LETTERS TO THE EDITOR Test of universal finite-size scaling in two-dimensional site percolation (L301-L306) A Aharony and D Stauffer Non-Markov noise in barrier-fluctuation model (L307-L312) Petr Chvosta and Peter Reineker Minimal uncertainty states for quantum groups (L313-L316) R Delbourgo and R B Zhang Three-species diffusion-limited reaction with continuous density-decay exponents (L317-L324) Jae Woo Lee and Vladimir Privman The Jacobi eigenfunctions and the quantum mechanical hypervirial theorems method for bound-state problems (L325-L330) T E Liolios and M E Grypeos Residual entropy of the square Ising antiferromagnet in the maximum critical field: the Fibonacci matrix (L331-L337) Borko D Stosic, Tatijana Stosic, Ivon P Fittipaldi and J J P Veerman Log - normal distribution of level curvatures in the localized regime: analytical verification (L339-L345) Michail Titov, Daniel Braun and Yan V Fyodorov PAPERS STATISTICAL Pseudo winding numbers and the spherical ansatz (3279-3284) Ahmed Abouelsaood Capillary condensation in the two-dimensional lattice gas: A Monte Carlo test of fluctuation corrections to the Kelvin equation (3285-3297) E V Albano, K Binder and W Paul Novel decay laws for the one-dimensional reaction - diffusion model $A+A \ rightarrow (2-\epsilon) A$ as consequence of initial distributions (3299-3311) Pablo A Alemany Low-temperature series for the square lattice Potts model using the improved finite-lattice method (3313-3327) H Arisue and K Tabata Car accidents and number of stopped cars due to road blockage on a one-lane highway (3329-3332) N Boccara, H Fuks and Q Zeng Self-consistent screening approximation for critical dynamics (3333-3343) Matteo Campellone and Jean-Philippe Bouchaud The one-dimensional Potts model with long-range interactions: a renormalization group approach (3345-3361) Sergio A Cannas and Aglaé C N de Magalhães Vector breaking of replica symmetry in some low-temperature disordered systems (3363-3382) Viktor Dotsenko and Marc Mézard Capacity of the Hopfield model (3383-3391) Jianfeng Feng and Brunello Tirozzi Parallel simulations in ferromagnetic spin systems (3393-3405) O François Scaling properties of a model for ruptures in an elastic medium (3407-3419) Daniel Groleau, Birger Bergersen and Huang-Jian Xu Symbolic dynamics for hydrogen in a magnetic field (3421-3440) Kai T Hansen and Stefan Güttler Universal scaling of Lyapunov exponents (3441-3448) P Markos Exact results for surface deposition with precursor layer diffusion (3449-3461) G J Rodgers and J A N Filipe Probability distribution of random walks on self-avoiding walks (3463-3470) H Eduardo Roman Threshold-induced phase transitions in perceptrons (3471-3496) Ansgar H L West and David Saad Density profile of the atomic Bose - Einstein condensation (3497-3503) Xue-Xi Yi and Jun-Chen Su MATHEMATICAL Boundary conditions for integrable equations (3505-3513) V Adler, B Gürel, M Gürses and I Habibullin Mathematical considerations regarding the toroidal momentum operator (3515-3525) D V Anghel Non-integrable representations of the restricted quantum analogue of sl(3) (3527-3541) D Arnaudon Determinant of the Laplacian on a non-compact three-dimensional hyperbolic manifold with finite volume (3543-3552) Andrei A Bytsenko Guido Cognola and Sergio Zerbini Quantization of non-standard Hamiltonian systems (3553-3572) Alejandro Corichi and Michael P Ryan Jr Canonical subgroup matrices for free Abelian groups of finite rank: application to intersection and union subgroups (3573-3583) B L Davies, R Dirl and B Goldsmith The stability of a rigidly rotating magnetic fluid column effect of a periodic azimuthal magnetic field (3585-3602) Yusry O El-Dib Localization in strongly chaotic systems (3603-3612) Mario Feingold Quantum phase-space structures in classically mixed systems: a scattering approach (3613-3634) Steffen D Frischat and Eyal Doron Bäcklund transformation and nonlinear superposition formula of an extended Lotka - Volterra equation (3635-3641) Xing-Biao Hu and R K Bullough Characterization of quantum chaos by the autocorrelation function of spectral determinants (3643-3662) S Kettemann, D Klakow and U Smilansky On the radiative part of the Maxwell tensor for a Liénard - Wiechert field (3663-3669) H N Núñez-Yépez, J L López-Bonilla and A L Salas-Brito A non-perturbative method for the calculation of Green functions (3671-3679) V E Rochev An analytic perturbative solution for the Kadomtsev equation for a heavy atom in a very strong magnetic field (3681-3683) Bhimsen K Shivamoggi and David K Rollins The orthogonal eigenbasis and norms of eigenvectors in the spin Calogero - Sutherland model (3685-3717) Kouichi Takemura and Denis Uglov Using factorization to solve soliton equations (3719-3724) Yunbo Zeng GENERAL Exact method for locating potential resonances and Regge trajectories (3725-3737) S A Sofianos and S A Rakityansky CORRIGENDA The cooperativity length in models for the glass transition (3739-3739) D Sappelt and J Jäckle 1993 J. Phys. A: Math. Gen. 26 7325-41 Examples of quaternionic and Kähler structures in Hamiltonian models of nearly geostrophic flow (3739-3739) V N Rubtsov and I Roulstone 1997 J. Phys. A: Math. Gen. 30 L63-8 This Journal's Home Page | Journal Scope | Forthcoming Articles Tables of Contents | Editorial Board | How to Submit | Abstracted In Ordering Information Electronic Journals v1.2a. Copyright © IOP Publishing Ltd. 1995, 1996, 1997. All rights reserved.

Journal of Physics A: Mathematical and General Volume 30, Number 11, 7 June 1997 LETTERS TO THE EDITOR Super Yangian double DY ( gl( 1| 1)) and its Gauss decomposition (L347-L350) Jin-fang Cai, Guo-xing Ju, Ke Wu and Shi-kun Wang Computing the topological pressure for intermittent maps (L351-L358) Per Dahlqvist Relaxation processes and entropic traps in the Backgammon model (L359-L365) Silvio Franz and Felix Ritort Localization properties of the periodic random Anderson model (L367-L371) M Hilke Markov processes and a multiple generating function of product of generalized Laguerre polynomials (L373-L377) Poh-Aun Lee The compaction in granular media and frustrated Ising models (L379-L385) Mario Nicodemi, Antonio Coniglio and Hans J Herrmann Storage capacity of the fully-connected committee machine (L387-L392) R Urbanczik PAPERS STATISTICAL Elementary excitations in the Hubbard model with boundaries (3741-3756) Hitoshi Asakawa and Masuo Suzuki Attraction basins in discretized maps (3757-3769) Ugo Bastolla and Giorgio Parisi New evidence for super-roughening in crystalline surfaces with a disordered substrate (3771-3778) Barbara Coluzzi, Enzo Marinari and Juan J Ruiz-Lorenzo Equilibrium crystal shape of the Potts model at the first-order transition point (3779-3793) Masafumi Fujimoto On-line learning of non-monotonic rules by simple perceptron (3795-3816) Jun-ichi Inoue, Hidetoshi Nishimori and Yoshiyuki Kabashima Asymmetric XXZ chain at the antiferromagnetic transition: spectra and partition functions (3817-3836) Doochul Kim Asymmetries in structure factor histograms (3837-3845) G Korniss, B Schmittmann and R K P Zia Energy fluctuations in steady-state binary nucleation (3847-3865) Mihalis Lazaridis and Yannis Drossinos Inertia tensor and size of a polymer chain (3867-3882) M Molisana Spin - spin correlation function for the free-fermion model: crossover from two-dimensional Ising to Pokrovsky - Talapov critical behaviour (3883-3890) S B Rutkevich Monte Carlo simulation on aging processes within one `pure state' of the SK spin-glass model (3891-3906) Hajime Takayama, Hajime Yoshino and Koji Hukushima MATHEMATICAL Coupled modes semiclassical treatment of nonadiabatic transitions (3907-3926) Marc Boiron, Maurice Lombardi and Laurent Wiesenfeld Operator transformations between exactly solvable potentials and their Lie group generators (3927-3936) Andrew J Bordner Generalized point interactions in one-dimensional quantum mechanics (3937-3945) F A B Coutinho, Y Nogami and J Fernando Perez The path integral quantization and the construction of the S-matrix operator in the Abelian and non-Abelian Chern - Simons theories (3947-3965) V Ya Fainberg, N K Pak and M S Shikakhwa Numerical simulation of a quantum particle in a box (3967-3975) Raphaël P Hermann WKB quantization of the Morse Hamiltonian and periodic meromorphic functions (3977-3982) I A Ivanov Representations of generalized oscillator algebra (3983-3990) Piotr Kosinski, Michal Majewski and Pawel Maslanka Large time behaviour for a class of turbulence models - stochastic Burgers equations (3991-4004) Kai Liu Bhabha relativistic wave equations (4005-4017) R-K Loide, I Ots and R Saar A constant mean curvature surface and the Dirac operator (4019-4029) Shigeki Matsutani A differential geometric setting for mixed first- and second-order ordinary differential equations (4031-4052) W Sarlet, F Cantrijn and D J Saunders Path integral, semiclassical and stochastic propagators for Markovian open quantum systems (4053-4064) Walter T Strunz Application of Bogomolny's transfer operator to a circular harmonic oscillator plus $1/r^2$ potential (4065-4073) P Tong and D A Goodings On boson algebras as Hopf algebras (4075-4087) I Tsohantjis, A Paolucci and P D Jarvis Plane waves, integrable quantum systems, Green functions and the groups SO( p, q), p $\leq$ q (4089-4107) Yi A Verdiyev Plane waves, integrable quantum systems and the group U( p, q), p $\leq$ q (4109-4116) Yi A Verdiyev GENERAL Theory of controlled quantum dynamics (4117-4132) Salvatore De Martino, Silvio De Siena and Fabrizio Illuminati COMMENT `A new efficient method for calculating perturbative energies using functions which are not square integrable': Regularization and justification (4133-4136) C K Au, Chi-Keung Chow and Chong-Sun Chu CORRIGENDUM On shooting methods for calculation of potential resonances (4137-4137) M Cízek and J Horácek 1996 J. Phys. A: Math. Gen. 29 6325-42 This Journal's Home Page | Journal Scope | Forthcoming Articles Tables of Contents | Editorial Board | How to Submit | Abstracted In Ordering Information Electronic Journals v1.2a. Copyright © IOP Publishing Ltd. 1995, 1996, 1997. All rights reserved.

Journal of Physics A: Mathematical and General Volume 30, Number 12, 21 June 1997 LETTERS TO THE EDITOR A hierarchical model for ageing (L393-L400) U Geppert, H Rieger and M Schreckenberg Canonical formulation of a generalized coupled dispersionless system (L401-L407) Hiroshi Kakuhata and Kimiaki Konno On the convergence of a class of random geometric series with application to random walks and percolation theory (L409-L414) Michael J Kearney, Vincent M Dwyer and Paul C Bressloff One-loop contribution to the dynamical exponents in spin glasses (L415-L421) G Parisi and P Ranieri Algebraic Bethe ansatz for the one-dimensional Bariev chain (L423-L427) Huan-Qiang Zhou PAPERS STATISTICAL Spectrum of boundary states in the open Hubbard chain (4139-4149) Gerald Bedürftig and Holger Frahm Connective constant of SAWs on the Sierpinski gasket family (4151-4160) F A C C Chalub, F D A Aarão Reis and R Riera Lax pair formulation for one-dimensional Hubbard open chain with chemical potential (4161-4169) Xi-Wen Guan, Mei-Shan Wang and Shan-De Yang A Lotka-type model for oscillations in surface reactions (4171-4186) J Mai, V N Kuzovkov and W von Niessen Surface incommensurate structure in an anisotropic model with competing interactions on semi-infinite triangular lattice (4187-4198) Pavol Pajerský and Anton Surda Dynamics of lattice vibrations for one-dimensional commensurate and incommensurate composites with harmonic interaction (4199-4214) O Radulescu and T Janssen Some properties of the Calogero - Sutherland model with reflections (4215-4225) D Serban Hamiltonian aspects of three-wave resonant interactions in gas dynamics (4227-4257) G M Webb, A Zakharian, M Brio and G P Zank MATHEMATICAL Spiral waves solutions in reaction-diffusion equations with symmetries. Analysis through specific models (4259-4271) J F R Archilla, J L Romero, F Romero Romero and F Palmero Emission by multipoles: an exact result in terms of reducible multipoles (4273-4281) U Bellotti and M Bornatici A mathematical construction of n-dimensional quasicrystals starting from G-clusters (4283-4291) N Cotfas and J-L Verger-Gaugry Analytic expression for the structure factor and for the moment-generating function of fractal sets and multifractal measures (4293-4312) Massimiliano Giona Twisted quantum affine superalgebra $U_q[sl(2|2)^(2)]$, $U_q[osp(2|2)]$ invariant R-matrices and a new integrable electronic model (4313-4325) Mark D Gould, Jon R Links, Yao-Zhong Zhang and Ioannis Tsohantjis Normal frames and the validity of the equivalence principle: II. The case along paths (4327-4336) Bozhidar Z Iliev Sum rule for the spectra of $x^{2m}$ potentials (4337-4339) I A Ivanov Quantum integrability of the generalized elliptic Ruijsenaars models (4341-4364) Yasushi Komori and Kazuhiro Hikami Relativistic fixed-energy amplitudes of the step and square well potential problems (4365-4372) De-Hone Lin Deformation of the `embedding' $A_S \ supset G$ (4373-4382) A Naddeo and A Sciarrino Action of classical operators on $ so_q(3) \subset u_q(3)$ basis states (4383-4392) P P Raychev, R P Roussev, N Lo Iudice and P A Terziev Signatures of finite representations of real, outer Lie algebras (4393-4398) Alexander N Rudy Classical relativistic dynamics of a free electron in an intense laser field (4399-4412) Yousef I Salamin A unified construction of variational R-matrix methods: I. The Schrödinger equation (4413-4438) Radoslaw Szmytkowski Note on the representation of angular momentum by complex differential forms (4439-4445) A J van Wonderen and K Lendi CORRIGENDUM Symmetries of factorization chains for the discrete Schrödinger equation (4447-4447) V Spiridonov 1997 J. Phys. A: Math. Gen 30 L15-L21 This Journal's Home Page | Journal Scope | Forthcoming Articles Tables of Contents | Editorial Board | How to Submit | Abstracted In Ordering Information Electronic Journals v1.2a. Copyright © IOP Publishing Ltd. 1995, 1996, 1997. All rights reserved.

Journal of Physics A: Mathematical and General Volume 30, Number 13, 7 July 1997 LETTERS TO THE EDITOR q-Laguerre and Wall polynomials are related by the Fourier - Gauss transform (L429-L432) M K Atakishiyeva and N M Atakishiyev Aperiodic Ising quantum chain and its relation with a classical Ising chain in an inhomogeneous field (L433-L435) Dragi Karevski Gauss - Codazzi equations for generic surfaces: equivalence to the DS linear problem with constraint, linearizability and reductions (L437-L441) B G Konopelchenko PAPERS STATISTICAL Structure of metastable states in spin glasses by means of a three replica potential (4449-4466) Andrea Cavagna, Irene Giardina and Giorgio Parisi Properties of the chiral spin liquid state in generalized spin ladders (4467-4479) Holger Frahm and Claus Rödenbeck Error threshold in simple landscapes (4481-4487) Silvio Franz and Luca Peliti On the stability of the mean-field spin glass broken phase under non-Hamiltonian perturbations (4489-4511) G Iori and E Marinari Finite-dimensional representations of the quadratic algebra: Applications to the exclusion process (4513-4526) K Mallick and S Sandow Monte Carlo simulation of the short-time behaviour of the dynamic XY-model (4527-4535) K Okano, L Schülke, K Yamagishi and B Zheng Bifurcations of periodic orbits and uniform approximations (4537-4562) Henning Schomerus and Martin Sieber Semiclassical transition from an elliptical to an oval billiard (4563-4596) Martin Sieber An exact solution for two-dimensional wetting with a corrugated wall (4597-4605) P S Swain and A O Parry Free energy of self-interacting uniform stars (4607-4613) T C Yu, D S Gaunt and S G Whittington MATHEMATICAL Overlaps of the biorthogonal $U_q(3)$ coupling coefficients and related basic hypergeometric and other q-factorial series (4615-4637) Sigitas Alisauskas Symmetries of linear ordinary differential equations (4639-4649) Chris Athorne Integrals of periodic motion for classical equations of relativistic string with masses at ends (4651-4664) B M Barbashov Maxwell's square roots from the metric tensors of wave surfaces and branches of solutions of the photon and phonon wave equations (4665-4675) L M Barkovsky and A N Furs h-deformation of Gr (2) (4677-4680) Salih Çelik and Emanullah Hizel Constraints on beta functions from duality (4681-4686) Poul H Damgaard and Peter E Haagensen Application of renormalization to potential scattering (4687-4700) Carlos F de Araujo Jr, Lauro Tomio, Sadhan K Adhikari and T Frederico Direct asymptotic analysis of the second Painlevé equation: three different limits (4701-4708) Patrick Doran-Wu and Nalini Joshi Continuous wavelet transform analysis of quantum systems with rational potentials (4709-4729) Carlos R Handy and Romain Murenzi Macroscopic quantum systems as measuring devices: dc SQUIDs and superselection rules (4731-4755) F E Harrison and K K Wan Permutation-type solutions to the Yang - Baxter and other n-simplex equations (4757-4771) J Hietarinta Algebraic phenomenological model for molecular rotational relaxation (4773-4782) L V Il'ichov State reconstruction and irregular wavefunctions for the hydrogen atom (4783-4789) D S Krähmer and U Leonhardt Time-of-arrival formalism for the relativistic particle (4791-4801) J León Conformal invariance and integrable models (4803-4813) Sen-yue Lou Zero sets of $\tau$-functions and hidden hierarchies of KdV type (4815-4824) Manuel Mañas, Luis Martinez Alonso and Elena Medina Canonical Miura maps between the modified KP and KP hierarchies (4825-4833) Jiin-Chang Shaw and Ming-Hsien Tu Bound states in a nonlinear Kronig - Penney model (4835-4849) Stavros Theodorakis and Epameinondas Leontidis Products and plethysms for the fundamental harmonic series representations of U( p, q) (4851-4856) Jean-Yves Thibon, Frédéric Toumazet and Brian G Wybourne On the uniqueness of the Moyal structure of phase-space functions (4857-4866) C Tzanakis and A Dimakis The growth of Bargmann functions and the completeness of sequences of coherent states (4867-4876) A Vourdas Finite-dimensional behaviour for the Benjamin - Bona - Mahony equation (4877-4885) Bixiang Wang and Wanli Yang Dressing transformation method for finding soliton solutions of the sinh - Gordon equation (4887-4893) Huan-Xiong Yang This Journal's Home Page | Journal Scope | Forthcoming Articles Tables of Contents | Editorial Board | How to Submit | Abstracted In Ordering Information Electronic Journals v1.2a. Copyright © IOP Publishing Ltd. 1995, 1996, 1997. All rights reserved.

Journal of Physics A: Mathematical and General Volume 30, Number 14, 21 July 1997 LETTERS TO THE EDITOR Logarithmic corrections to gap scaling in random-bond Ising strips (L443-L447) S L A de Queiroz Phase transition in restricted solid-on-solid models with finite-distance hoppings (L449-L455) Yup Kim and S H Yook Form-factors computation of Friedel oscillations in Luttinger liquids (L457-L463) F Lesage and H Saleur Exact solution of the lattice vertex model analogue of the coupled Bariev XY chains (L465-L470) M J Martins and P B Ramos Self-accelerating death of reacting species: sharp transition in long-time relaxation dynamics (L471-L478) Boris M Shipilevsky PAPERS STATISTICAL Superfluidity III (4895-4913) N Angelescu, A Verbeure and V Zagrebnov Motion of a ball dropped onto a one-dimensional self-affine surface (4915-4924) Harold Auradou, Daniel Bideau, Alex Hansen and Knut Jø rgen Må lø y Spectra of non-Hermitian quantum spin chains describing boundary induced phase transitions (4925-4938) Ulrich Bilstein and Birgit Wehefritz Universality of subleading corrections for self-avoiding walks in the presence of one-dimensional defects (4939-4961) Sergio Caracciolo, Maria Serena Causo and Andrea Pelissetto Universal amplitude ratios in the three-dimensional Ising model (4963-4982) M Caselle and M Hasenbusch Learning in two-layered networks with correlated examples (4983-4992) Tom Heskes and Jeroen Coolen Quantum chaos, random matrix theory, statistical mechanics in two dimensions, and the second law - a case study (4993-5005) Sudhir R Jain and Daniel Alonso Variational methods for constrained polymer dynamics (5007-5022) Martin Koch, Jens-Uwe Sommer and Alexander Blumen The Haldane - Shastry model and RTT relations (5023-5036) Zhou-Fei Wang, Mo-Lin Ge and Kang Xue MATHEMATICAL Matrix Hamiltonians: SUSY approach to hidden symmetries (5037-5050) A A Andrianov, F Cannata, M V Ioffe and D N Nishnianidze Elliptic Ruijsenaars - Schneider model via the Poisson reduction of the affine Heisenberg double (5051-5063) G E Arutyunov, S A Frolov and P B Medvedev Modular groups, visibility diagram and quantum Hall effect (5065-5075) Yvon Georgelin, Thierry Masson and Jean-Christophe Wallet Non-standard construction of Hamiltonian structures (5077-5084) Andrés Gomberoff and Sergio A Hojman All the special functions are fractional differintegrals of elementary functions (5085-5103) Virginia Kiryakova The Maxwell - Bloch equation and correlation functions for the penetrable Bose gas (5105-5121) T Kojima and V Korepin On fusion algebra of chiral $SU(N)_K$ models (5123-5131) A Lima-Santos A harmonic oscillator on the Poincaré disc and hypercontractivity (5133-5139) Shunlong Luo Time-dependent symmetries of variable-coefficient evolution equations and graded Lie algebras (5141-5149) W X Ma, R K Bullough, P J Caudrey and W I Fushchych New special solutions of the `Brusselator' reaction model (5151-5157) I Ndayirinde and W Malfliet Second-order second degree Painlevé equations related with Painlevé I, II, III equations (5159-5177) A Sakka and U Mugan Torsion of polygons in $Z^3$ (5179-5194) M C Tesi, E J Janse van Rensburg, E Orlandini and S G Whittington Coherent evolution in a multiply connected space in the presence of a fractional magnetic flux: the back-reaction effect (5195-5206) A Vourdas On the dispersion relation of simply periodic waves and the corresponding spectra in the Toda lattice (5207-5224) S Yoshino GENERAL Functional integral over velocities for a spinning particle with and without anomalous magnetic moment in a constant electromagnetic field (5225-5238) Wellington da Cruz ADDENDUM Addendum to `On nonlinear angular momentum theories, their representations and associated Hopf structures' (5239-5242) N Debergh COMMENT Tunnelling through asymmetric parabolic potential barriers (5243-5244) Zafar Ahmed This Journal's Home Page | Journal Scope | Forthcoming Articles Tables of Contents | Editorial Board | How to Submit | Abstracted In Ordering Information Electronic Journals v1.2a. Copyright © IOP Publishing Ltd. 1995, 1996, 1997. All rights reserved.

Journal of Physics A: Mathematical and General Volume 30, Number 15, 7 August 1997 LETTERS TO THE EDITOR Magnetic correlation length and universal amplitude of the lattice $E_8$ Ising model (L479-L484) M T Batchelor and K A Seaton R-matrices and generalized inverses (L485-L493) H W Braden A few remarks on integral representation for zonal spherical functions on the symmetric space $SU(N)/SO(N,R)$ (L495-L501) J F Cariñena and A M Perelomov Quantum Borel kinematics on three-dimensional manifolds and knot groups (L503-L506) H D Doebner and W Groth Simplified calculation of boundary S matrices (L507-L512) Anastasia Doikou, Luca Mezincescu and Rafael I Nepomechie About the supersymmetric extension of the symplectic Faddeev - Jackiw quantization formalism (L513-L517) A Foussats and O S Zandron Models of passive and reactive tracer motion: an application of Ito calculus (L519-L523) Paolo Muratore Ginanneschi Symmetries of the stochastic Burgers equation (L525-L533) E V Ivashkevich An orthogonal basis for the $B_N$-type Calogero model (L535-L541) S Kakei A new algebraic Bethe ansatz for gl(2,1) invariant vertex models (L543-L548) M P Pfannmuller and H Frahm Coherent states and the $kq$-representation (L549-L554) J Zak PAPERS STATISTICAL Isothermal Maxwell daemon and active binding of pairs of particles (5245-5258) Vladislav Cápek Zero-temperature hysteresis in the random-field Ising model on a Bethe lattice (5259-5267) Deepak Dhar, Prabodh Shukla and James P Sethna Algebraic and analytic properties of the one-dimensional Hubbard model (5269-5287) Frank Göhmann and Shuichi Murakami New perspective in the theory of second-order stochastic processes (5289-5298) J Heinrichs q-functional Wick's theorems for particles with exotic statistics (5299-5310) K N Ilinski, G V Kalinin and A S Stepanenko Chaos in a two-dimensional Ising spin glass (5311-5317) Muriel Ney-Nifle and A Peter Young Lee - Yang zeros in the scaling region of a two-dimensional quasiperiodic Ising model (5319-5327) Harald Simon and Michael Baake The binding energy and the charged gaps in the negative- U Hubbard model: some rigorous results (5329-5338) Guang-Shan Tian Lattice Green function in uniform magnetic fields (5339-5350) Tsuyoshi Ueta Determination of the bond percolation threshold for the Kagomé lattice (5351-5359) Robert M Ziff and Paul N Suding MATHEMATICAL Flux and scattering into cones for long range and singular potentials (5361-5379) W O Amrein and D B Pearson Time-dependent partial waves and vortex rings in the dynamics of wavepackets (5381-5392) R Arvieu, P Rozmej and W Berej One-dimensional Casimir effect perturbed by an external field (5393-5403) E Elizalde and A Romeo The reversed q-exponential functional relation (5405-5409) David B Fairlie and Ming-Yuan Wu Casimir invariants for the complete family of quasisimple orthogonal algebras (5411-5426) Francisco J Herranz and Mariano Santander Co-isotropic and Legendre - Lagrangian submanifolds and conformal Jacobi morphisms (5427-5444) Raúl Ibáñez, Manuel de León, Juan C Marrero and David Martín de Diego$||$ Method for deriving rational solutions of some nonlinear evolution equations (5445-5453) Nicolai A Kudryashov The exponential map of GL( N) (5455-5470) Alexander Laufer On quantum spin-chain spectra and the representation theory of Hecke algebras by augmented braid diagrams (5471-5495) Paul P Martin and Bruce W Westbury Microwave-assisted tunnelling in the presence of dissipation (5497-5510) G J Papadopoulos The Atiyah - Singer index theorem and the gauge field copy problem (5511-5516) A S Sant'Anna, N C A da Costa and F A Doria Topological currents in relativistic Schrödinger theory (5517-5541) M Sorg Double poles of the S-matrix in a two-channel model (5543-5549) W Vanroose, P Van Leuven, F Arickx and J Broeckhove Conserved and broken symmetries in the renormalization of the phase space lattice Hamiltonian (5551-5568) Michael Wilkinson and Ritchie J Kay Fractional integral associated to generalized cookie-cutter set and its physical interpretation (5569-5577) Zu-Guo Yu, Fu-Yao Ren and Ji Zhou COMMENTS Comment on `On the Coulomb potential in one dimension' by P Kurasov (5579-5581) Werner Fischer, Hajo Leschke and Peter Müller Response to ``Comment on `On the Coulomb potential in one dimension' '' by Fischer, Leschke and Müller (5583-5589) P Kurasov CORRIGENDA Supermultiplets and relativistic problems: I. The free particle with arbitrary spin in a magnetic field (5591-5591) M Moshinsky and Yu F Smirnov 1996 J. Phys. A: Math. Gen. 29 6027-42 The analytic inversion of any finite symmetric tridiagonal matrix (5592-5592) H A Yamani and M S Abdelmonem 1997 J. Phys. A: Math. Gen. 30 2889-93 This Journal's Home Page | Journal Scope | Forthcoming Articles Tables of Contents | Editorial Board | How to Submit | Abstracted In Ordering Information Electronic Journals v1.2a. Copyright © IOP Publishing Ltd. 1995, 1996, 1997. All rights reserved.

Journal of Physics A: Mathematical and General Volume 30, Number 16, 21 August 1997 LETTERS TO THE EDITOR A note on a capillarity model and the nonlinear Schrödinger equation (L555-L557) L K Antanovskii, C Rogers and W K Schief Fourier - Gauss transforms of the continuous big q-Hermite polynomials (L559-L565) M K Atakishiyeva and N M Atakishiyev Structure of generating partitions for two-dimensional maps (L567-L576) Lars Jaeger and Holger Kantz On the nature of large fluctuations in equilibrium systems: observation of an optimal force (L577-L583) D G Luchinsky Precise determination of the critical threshold and exponents in a three-dimensional continuum percolation model (L585-L592) M D Rintoul and S Torquato PAPERS STATISTICAL Temperature evolution and bifurcations of metastable states in mean-field spin glasses, with connections with structural glasses (5593-5612) Alain Barrat, Silvio Franz and Giorgio Parisi Attractors in fully asymmetric neural networks (5613-5631) U Bastolla and G Parisi Instanton picture of the spin tunnelling in the Lipkin - Meshkov - Glick model (5633-5643) V I Belinicher, C Providencia and J da Providencia Surface critical exponents for a three-dimensional modified spherical model (5645-5656) D M Danchev, J G Brankov and M E Amin Exact stationary photon distributions due to competition between one- and two-photon absorption and emission (5657-5667) V V Dodonov and S S Mizrahi Exact steady states of disordered hopping particle models with parallel and ordered sequential dynamics (5669-5685) M R Evans Bosonization of vertex operators for the $Z_n$-symmetric Belavin model (5687-5696) Heng Fan, Bo-yu Hou, Kang-jie Shi and Wen-li Yang Fluctuation-controlled transient below the on - off intermittency transition (5697-5707) H Fujisaka, S Matsushita and T Yamada Replica method for wide correlators in Gaussian orthogonal, unitary and symplectic random matrix ensembles (5709-5725) Chigak Itoi, Hisamitsu Mukaida and Yoshinori Sakamoto Kinetic theory approach to the SK spin glass model with Glauber dynamics (5727-5733) Grzegorz Szamel Patterns of motion for random walkers under holonomic constraints (5735-5742) M W Walser, I M Sokolov and A Blumen Fermi edge singularities: Bound states and finite-size effects (5743-5765) Alexandre M Zagoskin and Ian Affleck MATHEMATICAL On the Fourier transform and the spectral properties of the p-adic momentum and Schrödinger operators (5767-5784) Sergio Albeverio, Roberto Cianci and Andrew Khrennikov On gauge invariance and spontaneous symmetry breaking (5785-5792) A Aste, G Scharf and M Dütsch Canonical transformations to warped surfaces: Correction of aberrated optical images (5793-5803) Eisso J Atzema, Guillermo Krötzsch and Kurt Bernardo Wolf The multicomponent Eckhaus equation (5805-5814) F Calogero, A Degasperis and S De Lillo Extended matrix Gelfand - Dickey hierarchies: reduction to classical Lie algebras (5815-5824) László Fehér and Ian Marshall The Riccati - Padé method for coupled-channel equations (5825-5833) F M Fernández and R Guardiola Mechanical systems subjected to impulsive constraints (5835-5854) Alberto Ibort, Manuel de León, Ernesto A Lacomba, David Martin de Diego and Paulo Pitanga On a coupled system of equations describing pulse propagation in quadratic media (5855-5867) D Mihalache, L-C Crasovan and N-C Panoiu Non-integrability of some Hamiltonian systems in polar coordinates (5869-5876) M E Sansaturio, I Vigo-Aguiar and J M Ferrándiz Some orthogonal very well poised $g\phi 7$-functions (5877-5885) Sergei K Suslov This Journal's Home Page | Journal Scope | Forthcoming Articles Tables of Contents | Editorial Board | How to Submit | Abstracted In Ordering Information Electronic Journals v1.2a. Copyright © IOP Publishing Ltd. 1995, 1996, 1997. All rights reserved.

Journal of Physics A: Mathematical and General Volume 30, Number 17, 7 September 1997 LETTERS TO THE EDITOR Coherent states for parabosons (L593-L597) B Bagchi and D Bhaumik Functional optimization of online algorithms in multilayer neural networks (L599-L605) R Vicente and N Caticha PAPERS STATISTICAL Integrable su(3) spin chain combining different representations (5887-5909) J Abad and M Rios A study of activated processes in soft-sphere glass (5911-5925) D Lancaster and G Parisi New classic equations for conductivity and thermopower (5927-5940) Asya S Skal Robertson intelligent states (5941-5957) D A Trifonov Fluctuations in an asymmetric anharmonic crystal (5959-5970) M Van Canneyt and J Wojtkiewicz Uncertainty treatment in Monte Carlo simulation (5971-5980) K Weise and H Zhang MATHEMATICAL Irreducible decomposition for tensor product representations of Jordanian quantum algebras (5981-5992) N Aizawa A path decomposition expansion proof for the method of images (5993-5995) Assa Auerbach and L S Schulman A covariant BRST approach of self-dual p-forms without extrafields (5997-6007) C Bizdadea, S Balan and S O Saliu Bäcklund transformations on surfaces with $(k_1-m)(k_2-m)=\pm l^2$ in $R^{2,1}$ (6009-6020) Xi-Fang Cao and Chou Tian Convergent normal forms of symmetric dynamical systems (6021-6028) G Cicogna Lichnerowicz - Jacobi cohomology (6029-6055) Manuel de León, Juan C Marrero and Edith Padrón Nonlinear dynamics of dry friction (6057-6063) Franz-Josef Elmer Evolution operators and scattering theory for massive scalar fields on curved spacetimes (6065-6079) Edward P Furlani Nonclassical symmetries of a porous medium equation with absorption (6081-6091) Maria Luz Gandarias Poincaré group and relativistic wave equations in $2+1$ dimensions (6093-6121) Dmitri M Gitman and A L Shelepin Non-standard quantum so(3, 2) and its contractions (6123-6129) Francisco J Herranz An $\hbar$-deformation of the $W_N$ algebra and its vertex operators (6131-6145) Bo-yu Hou and Wen-li Yang Algebraic structure and analytic solutions of generalized three-level Jaynes - Cummings models (6147-6154) Quan-lin Jie, Shun-Jin Wang and Lian-Fu Wei Super-Yangian Y( gl(1|1)) and its oscillator realization (6155-6161) Guo-xing Ju, Jin-fang Cai, Han-ying Guo, Ke Wu and Shi-kun Wang q-Deformed Fock spaces and modular representations of spin symmetric groups (6163-6176) Bernard Leclerc and Jean-Yves Thibon Turning bosons into fermions: exclusion statistics, fractional statistics and the simple harmonic oscillator (6177-6183) A D Speliotopoulos The Yangian symmetry in the spin Calogero model and its applications (6185-6204) Kouichi Takemura Volume 31, 1998 Volume 30, 1997 Volume 29, 1996 [Previous Issue] [Next Issue] Journal of Physics A: Mathematical and General Volume 30, Number 18, 21 September 1997 LETTERS TO THE EDITOR On the higher-order generalizations of Poisson structures J A de Azcárraga, J M Izquierdo and J C Pérez Bueno (L607-L616) Polymers with a bimodal disorder distribution and directed percolation Paolo De Los Rios, Amos Maritan and Flavio Seno (L617-L621) On the second-neighbour correlator in 1D XXX quantum antiferromagnetic spin chain J Dittrich and V I Inozemtsev (L623-L626) Dynamical `strangeness' at the edge of chaos A Politi and R Badii (L627-L633) Uncertainty principle enhanced pairing correlations in projected Fermi systems near half filling B Sriram Shastry (L635-L641) Damage spreading in random field systems Thomas Vojta (L643-L649) PAPERS STATISTICAL Presence of racemic phases at low temperatures in a three-dimensional lattice gas of enantiomers Abdel K Belkasri and Dale A Huckaby (6205-6214) Series expansion analysis of the backbone properties of two-dimensional percolation clusters F M Bhatti, R Brak, J W Essam and T Lookman (6215-6232) Phase transitions in Scheidegger and Eden networks Heiko de Vries and Bruno Eckhardt (6233-6244) Non-equilibrium dynamics of a simple stochastic model C Godrèche and J M Luck (6245-6272) Storage capacities of committee machines with overlapping and non-overlapping receptive fields C Kwon and J-H Oh (6273-6285) Critical properties of the spin- Heisenberg chain with frustration and bond alternation Kiyomi Okamoto and Tota Nakamura (6287-6298) Extrapolation-CAM theory for critical exponents Howard L Richards, Naomichi Hatano and M A Novotny (6299-6311) On the distribution of zeros of chaotic wavefunctions Pragya Shukla (6313-6326) A quantum statistical model of a three-dimensional linear rigid rotator in a bath of oscillators: II. The electrical birefringence in relaxation regime J T Titantah and M N Hounkonnou (6327-6345) A quantum statistical model of a three-dimensional linear rigid rotator in a bath of oscillators: III. DC field dielectric property dynamics J T Titantah and M N Hounkonnou (6347-6370) Quantum tunnelling of magnetization in an alternating magnetic field: localization and chaos J L van Hemmen, H Hey and W F Wreszinski (6371-6389) The gauge-invariant dynamic equations for current-carrying plasma-like media with topological defects Nicholas B Volkov (6391-6424) MATHEMATICAL Matrix difference equations and a nested Bethe ansatz H Babujian, M Karowski and A Zapletal (6425-6450) Quantum spinors and spin groups from quantum Clifford algebras A Criscuolo, M Durdevic, M Rosenbaum and J D Vergara (6451-6474) QED one-loop corrections to a macroscopic magnetic dipole Jeremy S Heyl and Lars Hernquist (6475-6483) Birefringence and dichroism of the QED vacuum Jeremy S Heyl and Lars Hernquist (6485-6492) Canonical icosahedral quasilattices for the F-phase generated by coherent phases in physical space C Hohneker, P Kramer, Z Papadopolos and R V Moody (6493-6507) Generalized Jacobi structures J C Pérez Bueno (6509-6515) On the ground state of regular polygonal billiards Luca Molinari (6517-6524) The symmetrized Fermi function and its transforms D W L Sprung and J Martorell (6525-6534) Free motion on the Poisson SU( N) group S Zakrzewski (6535-6543) Vector coherent state realization of representations of the affine Lie algebra R B Zhang (6545-6551) GENERAL Renormalization in non-relativistic quantum mechanics Sadhan K Adhikari and Angsula Ghosh (6553-6564) Classical electrodynamics and the quantum nature of light Manoelito M de Souza (6565-6585) Electronic Journals v2.0. Copyright IOP Publishing Ltd 1995, 1996, 1997, 1998. All rights reserved. Volume 31, 1998 Volume 30, 1997 Volume 29, 1996 [Previous Issue] [Next Issue] Journal of Physics A: Mathematical and General Volume 30, Number 19, 7 October 1997 LETTERS TO THE EDITOR Order reductions of Lorentz - Dirac-like equations J M Aguirregabiria, A Hernández and M Rivas (L651-L654) Fourier - Gauss transforms of the Al-Salam - Chihara polynomials M K Atakishiyeva and N M Atakishiyev (L655-L661) PAPERS STATISTICAL Fractal-time approach to dispersive transport in single-species reaction-diffusion Pablo A Alemany (6587-6599) Elastic waves in random-fibre networks J Åström, M Kellomäki and J Timonen (6601-6613) Some results for a cluster - monomer model of aggregation with fragmentation Francisco Chávez, Michel Moreau and Luis Vicente (6615-6631) Thermodynamic relations of the Hermitian matrix ensembles Yang Chen and Mourad E H Ismail (6633-6654) Cycles in a synchronous neural network J F Fontanari (6655-6659) Stochastic model and equivalent ferromagnetic spin chain with alternation Akira Fujii (6661-6666) Hundreds of collisions between two hard needles Ayako Mukôyama and Yosuke Yoshimura (6667-6670) Relaxation at late stages in an entropy barrier model for glassy systems K P N Murthy and K W Kehr (6671-6677) On the hulls of directed percolation clusters A L Owczarek, A Rechnitzer, R Brak and A J Guttmann (6679-6691) Penumbra diffraction in the semiclassical quantization of concave billiards Harel Primack, Holger Schanz, Uzy Smilansky and Iddo Ussishkin (6693-6723) Geometrical properties of aggregates with tunable fractal dimension Romain Thouy and Rémi Jullien (6725-6735) MATHEMATICAL A property of the vacuum stress tensor in static Casimir theory A A Actor and I Bender (6737-6741) The distribution of zeros of general q-polynomials R Álvarez-Nodarse , E Buendía and J S Dehesa (6743-6768) Duality for the Jordanian matrix quantum group B L Aneva, V K Dobrev and S G Mihov (6769-6781) On the number of bouncing ball modes in billiards A Bäcker, R Schubert and P Stifter (6783-6795) Boson representations, non-standard quantum algebras and contractions Angel Ballesteros, Francisco J Herranz and Javier Negro (6797-6809) Ultrametric matrices and representation theory P Bántay and G Zala (6811-6820) On the approximability of the `ground-state' problem for Ising spin glasses by quantum devices A Bertoni, G Cattaneo and D Oggioni (6821-6830) Physical origin of the Runge - Lenz vector Jens Peder Dahl (6831-6840) Quantization of kinematics and dynamics on with difference operators and a related q-deformation of the Witt algebra V K Dobrev, H-D Doebner and R Twarock (6841-6859) Laplace transformations of hydrodynamic-type systems in Riemann invariants: Periodic sequences E V Ferapontov (6861-6878) Quasi-exactly solvable Lie superalgebras of differential operators Federico Finkel, Artemio González-López and Miguel A Rodríguez (6879-6892) One-dimensional hydrogen atom: a singular potential in quantum mechanics A N Gordeyev and S C Chhajlany (6893-6909) Classical lattice W algebras and integrable systems Kazuhiro Hikami and Rei Inoue (6911-6924) KP symmetry reductions and a generalized constraint Ignace Loris and Ralph Willox (6925-6938) Exact analytical solution of the N-level Landau - Zener-type bow-tie model Valentine N Ostrovsky and Hiroki Nakamura (6939-6950) Complex analysis of a piece of Toda lattice Satoru Saito, Noriko Saitoh, Hisao Konuma and Katsuhiko Yoshida (6951-6962) Generating functions for stable branching coefficients of , and Thomas Scharf, Jean-Yves Thibon and Brian G Wybourne (6963-6975) Evaluating one-loop integrals at finite temperature Lautaro Vergara (6977-6980) On the classical and quantum Coulomb scattering D Yafaev (6981-6992) CORRIGENDA The local sine - Gordon model Bo-Wei Xu and Yu-Mei Zhang (6993) Localization transition of a dynamic reaction front M J E Richardson and M R Evans (6993) Electronic Journals v2.0. Copyright IOP Publishing Ltd 1995, 1996, 1997, 1998. All rights reserved. Volume 31, 1998 Volume 30, 1997 Volume 29, 1996 [Previous Issue] [Next Issue] Journal of Physics A: Mathematical and General Volume 30, Number 20, 21 October 1997 LETTERS TO THE EDITOR A mapping relating complex and physical temperatures in the 2D q-state Potts model and some applications Heiko Feldmann, Robert Shrock and Shan-Ho Tsai (L663-L668) New integrable differential-difference systems Xing-Biao Hu, Peter A Clarkson and Robin Bullough (L669-L676) On the zeros of the Husimi distribution H J Korsch, C Müller and H Wiescher (L677-L684) An explicit relationship between steady-state size distribution and breakage kernel for limited breakage processes M Kostoglou and A J Karabelas (L685-L691) The shapes of self-avoiding polygons with torsion E Orlandini, M C Tesi, E J Janse van Rensburg and S G Whittington (L693-L698) Highest weight representations of the quantum algebra U( gl T D Palev and N I Stoilova (L699-L705) PAPERS STATISTICAL Probability of first return on Cayley trees L Acedo and A Santos (6995-7007) High-order curvatures and harmonicity regression Carlo Alabiso and Mario Casartelli (7009-7020) An investigation of the hidden structure of states in a mean-field spin-glass model Andrea Cavagna, Irene Giardina and Giorgio Parisi (7021-7038) Field theoretic and Monte Carlo analysis of the Domb - Joyce model Peter Grassberger, Peter Sutter and Lothar Schäfer (7039-7056) Block variables for deterministic aperiodic sequences Michael Hörnquist (7057-7065) Structure in the parameter dependence of order and chaos for the quadratic map Brian R Hunt and Edward Ott (7067-7076) Low-lying excitations in the square - triangle random tiling model P A Kalugin (7077-7087) Langevin dynamics of the Lebowitz - Percus model F G Padilla and F Ritort (7089-7114) Mean field dynamical exponents in finite-dimensional Ising spin glass G Parisi, P Ranieri, F Ricci-Tersenghi and J J Ruiz-Lorenzo (7115-7131) MATHEMATICAL Absolute optimal time - frequency basis - a research tool Alin Cârsteanu, Victor B Sapozhnikov, V Venugopal and Efi Foufoula-Georgiou (7133-7146) Tensor products of q-superalgebra representations and q-series identities Won Sang Chung, E G Kalnins and W Miller Jr (7147-7166) Perturbation of an eigenvalue from a dense point spectrum: an example P Duclos, P Stovicek and M Vittot (7167-7185) The strong coupling expansion for anharmonic oscillators F M Fernández and R Guardiola (7187-7192) On the relation between cavity-dressed states, Floquet states, RWA and semiclassical models S Guérin, F Monti, J-M Dupont and H R Jauslin (7193-7215) The bispectral property of a q-deformation of the Schur polynomials and the q-KdV hierarchy Luc Haine and Plamen Iliev (7217-7227) The inverse of a semi-infinite symmetric banded matrix D A Lavis, B W Southern and I F Wilde (7229-7241) Non-local potentials with LS terms in algebraic scattering theory Péter Lévay (7243-7257) Deformations of the Riccati equation by using Miura-type transformations Sen-yue Lou (7259-7267) New generalizations of the integrable problems in rigid body dynamics H M Yehia (7269-7275) Electronic Journals v2.0. Copyright IOP Publishing Ltd 1995, 1996, 1997, 1998. All rights reserved. Volume 31, 1998 Volume 30, 1997 Volume 29, 1996 [Previous Issue] [Next Issue] Journal of Physics A: Mathematical and General Volume 30, Number 21, 7 November 1997 LETTERS TO THE EDITOR Exact random walk distributions using noncommutative geometry Jean Bellissard, Carlos J Camacho, Armelle Barelli and Francisco Claro (L707-L709) A complete devil's staircase in the Falicov - Kimball model C Micheletti, A B Harris and J M Yeomans (L711-L717) A generalized nonclassical state of the radiation field and some of its properties P Roy and B Roy (L719-L723) The constrained modified KP hierarchy and the generalized Miura transformations Jiin-Chang Shaw and Ming-Hsien Tu (L725-L731) Box and ball system with a carrier and ultradiscrete modified KdV equation Daisuke Takahashi and Junta Matsukidaira (L733-L739) PAPERS STATISTICAL The generalized Cattaneo equation for the description of anomalous transport processes Albert Compte and Ralf Metzler (7277-7289) Density correlations of magnetic impurities and disorder Jean Desbois, Cyril Furtlehner and St'ephane Ouvry (7291-7300) Bogomolny section for the stadium: I. Quantum theory J S Espinoza Ortiz and A M Ozorio de Almeida (7301-7313) Aperiodic Ising quantum chains Joachim Hermisson, Uwe Grimm and Michael Baake (7315-7335) 3D spin glass and 2D ferromagnetic XY model: a comparison David Iñiguez, Enzo Marinari, Giorgio Parisi and Juan J Ruiz-Lorenzo (7337-7347) Potts models on Feynman diagrams D A Johnston and P Plechác (7349-7363) Glassy behaviour and semi-local invariance in Ising model with four-spin interaction Adam Lipowski (7365-7373) Preroughening transitions in a model for Si(001)- and Ge(001)-type crystal surfaces Jae Dong Noh and Marcel den Nijs (7375-7384) Classical and quantum measurements of position Carlo Presilla, Roberto Onofrio and Marco Patriarca (7385-7411) MATHEMATICAL New perturbation theory for the nonstationary anharmonic oscillator Alexander V Bogdanov and Ashot S Gevorkyan (7413-7425) On supersymmetric quantum mechanics in curved spaces N Debergh (7427-7436) On the singularity analysis of ordinary differential equations invariant under time translation and rescaling M R Feix, C Geronimi, L Cairó, P G L Leach, R L Lemmer and S Bouquet (7437-7461) The signatures of finite dimensional representations of the de Sitter groups SO and SO S Grimm, M de Montigny and J Patera (7463-7471) Crum transformation and rational solutions of the non-focusing nonlinear Schrödinger equation Andrew N W Hone (7473-7483) The Thirring model as an approximation to the theory of two-photon propagation A M Kamchatnov, H Steudel and A A Zabolotskii (7485-7499) Correlations between fragment sizes in sequential fragmentation Mikko Lensu (7501-7507) The Monodromy matrices of the XXZ model in the infinite volume limit Tetsuji Miwa and Robert Weston (7509-7523) Non-Abelian geometric phase for general three-dimensional quantum systems Ali Mostafazadeh (7525-7535) Quasibound states of the Green's function for weakly quantized systems Curt A Moyer (7537-7549) Master symmetries and bi-Hamiltonian structures for the relativistic Toda lattice J M Nunes da Costa and C-M Marle (7551-7556) Continuous stochastic Schrödinger equations and localization M Rigo, F Mota-Furtado and P F O'Mahony (7557-7571) A system of quantum stochastic differential equations in terms of non-equilibrium thermo field dynamics Takeshi Saito and Toshihico Arimitsu (7573-7595) On the convergence of the WKB series for the angular momentum operator Luca Salasnich and Fabio Sattin (7597-7602) Scattering of scalar and Dirac particles by a magnetic tube of finite radius Vladimir D Skarzhinsky and Jürgen Audretsch (7603-7620) Spectral transformations, self-similar reductions and orthogonal polynomials Vyacheslav Spiridonov, Luc Vinet and Alexei Zhedanov (7621-7637) Similarity solution for fragmentation with volume change Richard P Treat (7639-7658) Note on the algebra of screening currents for the quantum-deformed W-algebra Liu Zhao and Bo-Yu Hou (7659-7666) GENERAL q-Trinomial coefficients and the dilute A model Katherine A Seaton and Lynne C Scott (7667-7676) Electronic Journals v2.0. Copyright IOP Publishing Ltd 1995, 1996, 1997, 1998. All rights reserved. Volume 31, 1998 Volume 30, 1997 Volume 29, 1996 [Previous Issue] [Next Issue] Journal of Physics A: Mathematical and General Volume 30, Number 22, 21 November 1997 LETTERS TO THE EDITOR The existence of many-particle bound states despite a pair interaction with positive scattering length Bernhard Baumgartner (L741-L747) Entropic sampling and natural selection in biological evolution M Y Choi, H Y Lee, D Kim and S H Park (L749-L755) Gauge theory description of spin ladders Yutaka Hosotani (L757-L764) Short-time aging in binary glasses Giorgio Parisi (L765-L770) Globally optimal on-line learning rules for multi-layer neural networks Magnus Rattray and David Saad (L771-L776) Learning from stochastic rules under finite temperature - optimal temperature and asymptotic learning curve Tatsuya Uezu (L777-L784) Recurrence and ergodicity breaking in a Hamiltonian toy model Damián H Zanette (L785-L790) PAPERS STATISTICAL Variational method and duality in the 2D square Potts model L Angelini, M Pellicoro, I Sardella and M Villani (7677-7693) String tension in gonihedric three-dimensional Ising models M Baig, D Espriu, D A Johnston and Ranasinghe P K C Malmini (7695-7706) Information theory in the study of anisotropic radiation Raquel Domínguez-Cascante (7707-7719) `Real' versus `imaginary' noise in diffusion-limited reactions Martin J Howard and Uwe C Täuber (7721-7731) Light scattering data analysis via set inversion L Jaulin, J-L Godet, E Walter, A Elliasmine and Y Le Duff (7733-7738) Phase separation in a single-step growth model with surface diffusion Joachim Krug and Felix Hontinfinde (7739-7752) Learning by dilution in a neural network B López and W Kinzel (7753-7764) The lack of long-range correlations is a necessary condition for a functional biologically active protein E Sh Mamasakhlisov, V F Morozov and M S Shahinian (7765-7773) Link invariant of the Izergin - Korepin model P Pant and F Y Wu (7775-7782) Casimir's entropy M Revzen, R Opher, M Opher and A Mann (7783-7789) Non-equilibrium phase transition in a two-temperature lattice gas Attila Szolnoki (7791-7799) Neural networks with fast time-variation of synapses J J Torres, P L Garrido and J Marro (7801-7816) MATHEMATICAL Ladder operators and differential equations for orthogonal polynomials Yang Chen and Mourad E H Ismail (7817-7829) Solvable model for three-dimensional quantum scattering of a particle off several separable interactions centred at n arbitrary points E de Prunelé (7831-7848) Genetic algorithms for continuous optimization problems - a concept of parameter-space size adjustment Aleksandra B Djurisic, Jovan M Elazar and A D Rakic (7849-7861) Bound-state asymptotic estimates for window-coupled Dirichlet strips and layers Pavel Exner and Simeon A Vugalter (7863-7878) Cumulant expansion of the periodic Anderson model in infinite dimensions M E Foglio and M S Figueira (7879-7894) Quantization and scattering of massive scalar fields on exterior domains Edward P Furlani (7895-7917) Analytical inversion of general tridiagonal matrices Y Huang and W F McColl (7919-7933) Integrable system constructed out of two interacting superconformal fields Ziemowit Popowicz (7935-7944) Multivalley structure of attractor neural networks C Rodrigues Neto and J F Fontanari (7945-7951) Constructing solutions to the ultradiscrete Painlevé equations D Takahashi, T Tokihiro, B Grammaticos, Y Ohta and A Ramani (7953-7966) Study of transitions induced by squeezed light via path integral methods E G Thrapsaniotis (7967-7973) Analytic Bethe ansatz and functional equations for Lie superalgebra Zengo Tsuboi (7975-7991) COMMENT Comment on `The capacity of the Hopfield model' Anton Bovier (7993-7996) Electronic Journals v2.0. Copyright IOP Publishing Ltd 1995, 1996, 1997, 1998. All rights reserved. Volume 31, 1998 Volume 30, 1997 Volume 29, 1996 [Previous Issue] [Next Issue] Journal of Physics A: Mathematical and General Volume 30, Number 23, 7 December 1997 LETTERS TO THE EDITOR Spin block persistence at finite temperature Stéphane Cueille and Clément Sire (L791-L796) Explicit solvability of a class of Maliuzhinets' equations with matrix coefficients M A Lyalinov (L797-L802) New universal aspects of diffusion in strongly chaotic systems Marko Robnik, Jure Dobnikar, Andrea Rapisarda, Tomaz Prosen and Marko Petkovsek (L803-L813) PAPERS STATISTICAL Universality classes for extreme-value statistics Jean-Philippe Bouchaud and Marc Mézard (7997-8015) On the distribution of the Wigner time delay in one-dimensional disordered systems Alain Comtet and Christophe Texier (8017-8025) Chiral glass ordering in the XY spin glass in four dimensions S Jain (8027-8033) Metropolis Monte Carlo simulation of lattice animals E J Janse van Rensburg and N Madras (8035-8066) The Potts model on Kagomé and honeycomb lattices Iwan Jensen, Anthony J Guttmann, and Ian G Enting (8067-8083) Mean-field theory for a spin-glass model of neural networks: TAP free energy and the paramagnetic to spin-glass transition K Nakanishi and H Takayama (8085-8094) A moment-based approach to the dynamical solution of the Kuramoto model C J Perez and F Ritort (8095-8103) Dynamics of excitations in molecular condensates under the influence of an ultrashort pulse Jan Perina Jr (8105-8117) Optimal performance of an endoreversible cycle operating between a heat source and sink of finite capacities Zijun Yan and Lixuan Chen (8119-8127) Magnetic susceptibility and low-temperature specific heat of the integrable one-dimensional Hubbard model under open-boundary conditions Ruihong Yue and Tetsuo Deguchi (8129-8138) MATHEMATICAL Symmetry-preserving difference schemes for some heat transfer equations M I Bakirova, V A Dorodnitsyn and R V Kozlov (8139-8155) Soliton stability in systems of two real scalar fields D Bazeia, J R S Nascimento, R F Ribeiro and D Toledo (8157-8166) Stickiness and cantori C Efthymiopoulos, G Contopoulos, N Voglis and R Dvorak (8167-8186) Periodic orbit Maslov indices for systems with time-reversal symmetry J A Foxman and J M Robbins (8187-8190) Integral representation of fermionic Schwinger functions Martin Hensel (8191-8205) Numerical studies of localized wavefields governed by the Raman-extended derivative nonlinear Schrödinger equation J S Hesthaven, J Juul Rasmussen , L Bergé and J Wyller (8207-8224) Rational solutions of integrable equations via nonlinear superposition formulae Xing-Biao Hu (8225-8240) The Riemann - Hilbert problem associated with the quantum nonlinear Schrödinger equation V E Korepin and N A Slavnov (8241-8255) Phase-equivalent potentials from supersymmetry: analytical results for a Natanzon-class potential G Lévai, D Baye and J-M Sparenberg (8257-8271) The Holstein - Primakoff and Dyson realizations for the Lie superalgebra gl( m/ n + 1) Tchavdar D Palev (8273-8278) A new Young diagrammatic method for Kronecker products of and Feng Pan, Shihai Dong and J P Draayer (8279-8287) A dual resonance model solves the Yang - Baxter equation Satoru Saito (8289-8296) Quantum mechanics via extended measures S K Srinivasan (8297-8315) Localization of relativistic systems S Zakrzewski (8317-8323) Comments on the Drinfeld realization of the quantum affine superalgebra and its Hopft algebra structure Yao-Zhong Zhang (8325-8335) 9 j-symbols of the oscillator algebra and Krawtchouk polynomials in two variables Alexei Zhedanov (8337-8353) GENERAL Aharonov - Bohm geometric phases for rotated rotators M V Berry (8355-8362) Electronic Journals v2.0. Copyright IOP Publishing Ltd 1995, 1996, 1997, 1998. All rights reserved. Volume 31, 1998 Volume 30, 1997 Volume 29, 1996 [Previous Issue] [Next Issue] Journal of Physics A: Mathematical and General Volume 30, Number 24, 21 December 1997 LETTERS TO THE EDITOR Fourier - Gauss transforms of the Askey - Wilson polynomials N M Atakishiyev (L815-L820) Screening in anyon gas Subir Ghosh (L821-L828) Folding of the triangular lattice in the face-centred cubic lattice with quenched random spontaneous curvature S Mori and E Guitter (L829-L838) Packing of spheroids in three-dimensional space by random sequential addition J D Sherwood (L839-L843) PAPERS STATISTICAL Magnetic fluctuations in a finite two-dimensional model P Archambault, S T Bramwell and P C W Holdsworth (8363-8378) Ising exponents in the two-dimensional site-diluted Ising model H G Ballesteros, L A Fernández, V Martín-Mayor, A Muñoz Sudupe, G Parisi and J J Ruiz-Lorenzo (8379-8383) A constrained Potts antiferromagnet model with an interface representation J K Burton Jr and C L Henley (8385-8413) A non-perturbative approach to the random-bond Ising model D C Cabra, A Honecker, G Mussardo and P Pujol (8415-8426) The generalized Ornstein - Uhlenbeck process Manuel O Cáceres and Adrián A Budini (8427-8444) Landscape statistics of the p-spin Ising model Viviane M de Oliveira and J F Fontanari (8445-8457) Percolation and cluster structure parameters: The radius of gyration Joseph Hoshen (8459-8469) Series expansions for the percolation probability of a generalized Domany - Kinzel cellular automaton Iwan Jensen (8471-8478) Correlation functions in a one-dimensional kinetic Ising model S I Kuchanov and M A Aliev (8479-8496) Two-way traffic flow: Exactly solvable model of traffic jam H-W Lee, V Popkov and D Kim (8497-8513) Non-Markovian persistence at the parity conserving point of a one-dimensional nonequilibrium kinetic Ising model Nóra Menyhárd and Géza Ódor (8515-8521) Numerical indications for the existence of a thermodynamic transition in binary glasses Giorgio Parisi (8523-8539) Phase transitions in the generalization behaviour of multilayer perceptrons: II. The influence of noise B Schottky and U Krey (8541-8571) MATHEMATICAL General boundary conditions for a Dirac particle in a box and their non-relativistic limits Vidal Alonso and Salvatore De Vincenzo (8573-8585) A Jordanian quantum two-photon/Schrödinger algebra Angel Ballesteros, Francisco J Herranz and Preeti Parashar (8587-8597) Ionization probabilities through ultra-intense fields in the extreme limit A Fring , V Kostrykin and R Schrader (8599-8610) Unique large-time behaviour for solutions to Smoluchowski's coagulation equation Ole J Heilmann (8611-8622) Normal ordering in the theory of correlation functions of exactly solvable models Vladimir Korepin and Nikita Slavnov (8623-8633) Level dynamics for conservative and dissipative quantum systems Marek Kus, Fritz Haake, Dmitri Zaitsev and Alan Huckleberry (8635-8651) Polynomial rings of the chiral models A Lima-Santos (8653-8660) Fully supersymmetric hierarchies from an energy-dependent super Hill operator Q P Liu (8661-8670) On some definite multiple integrals M L Mehta and J-M Normand (8671-8684) Quantum gate arrays as coherent sums over classical logic gate arrays Bruno Nachtergaele and Vipul Periwal (8685-8692) Darboux transformations and the discrete KP equation J J C Nimmo (8693-8704) On modified NLS, Kaup and NLBq equations: differential transformations and bilinearization Dmitry Pelinovsky, Johan Springael, Franklin Lambert and Ignace Loris (8705-8717) The projector method for regular Poisson manifolds Paulo Pitanga and Paulo R Rodrigues (8719-8725) Discrete-time Volterra chain and classical orthogonal polynomials Vyacheslav Spiridonov and Alexei Zhedanov (8727-8737) Baker - Campbell - Hausdorff relation for special unitary groups Stefan Weigert (8739-8749) Beam break-up with tune chirp for an arbitrary wakefield David H Whittum (8751-8760) On algebraic classification of quasi-exactly solvable matrix models R Z Zhdanov (8761-8770) A quick perturbative method for Schrödinger equations Miloslav Znojil (8771-8783) COMMENTS Critical exponents of the four-state Potts model Richard J Creswick and Seung-Yeon Kim (8785-8786) Comment on energy level statistics in the mixed regime Marko Robnik and Tomaz Prosen (8787-8793) CORRIGENDUM The critical exponents of the two-dimensional Ising spin glass revisited: Exact ground-state calculations and Monte Carlo simulations H Rieger, L Santen, U Blasum, M Diehl and M Jünger (8795-8796) Electronic Journals v2.0. Copyright IOP Publishing Ltd 1995, 1996, 1997, 1998. All rights reserved.