Letters in Mathematical Physics 34 (1995) Contents to Volume 34 Volume 34 No.1 May 1995 MASATOSHI NOUMI, TORU UMEDA, and MASATO WAKAYAMA / A Quantum Dual Pair (s [2,0 ,) and the Associated Capelli Identity H. CORNILLE and M. IKLE / Positive Similarity Solutions for a Discrete Velocity Boltzman Coagulation-Fragmentation Model PANTELIS A. DAMIANOU, PASCHALIS PASCHALIS, and CHRIS- TODOULOS SOPHOCLEOUS / A Tri-Hamiltonian Formulation of the Full Kostant—Toda Lattice C. FRONSDAL and A. GALINDO / Deformations of Multiparameter Quantum gl() N. CICCOLI and R. GIACHETTI / The Two-Dimensional Euclidean Quantum Algebra at Roots of Unity MICHAEL K.-H. KIESSLING / Negative Temperature Bounds for 2D Vorticity Compounds H. GROSSE and J. STUBBE / Splitting of Landau Levels in the Presence of External Potentials I. D. CHUESHOV and T. V. GIRYA / Inertial Manifolds and Forms for Semilinear Parabolic Equations Subjected to Additive White Noise M. FLATO, M. GERSTENHABER, and A. A. VORONOV / Cohomology and Deformation of Leibniz Pairs Volume 34 No.2 June 1995 V. PAPAGEORGIOU, B. GRAMMATICOS, and A. RAMANT / Orthogonal Polynomial Approach to Discrete Lax Pairs for Initial Boundary- Value Problems of the QD Algorithm 91-101 V. GRINSHPUN / Localization for Random Potentials Supported on a Subspace 103-117 ANNE BOUTET DE MONVEL-BERTHIER, ALEXANDRINA NENCIU, and GHEORGHE NENCIU / Perturbed Periodic Hamiltonians: Essential Spectrum and Exponential Decay of Eigenfunctions 119-133 CHRISTOPHER KING and AMBAR SENGUPTA / A New 2-Form for Connections on Surfaces with Boundary 135-147 J. BERTRAND, G. G. EMCH, and G. RIDEAU / The Cohomology of the Classical and Quantum Weyl CCR in Curved Spaces 149-158 LETTERS IN MATHEMATICAL PHYSICS MICHEL CAHEN, SIMONE GUTT, and JOHN RAWNSLEY / Quantiza- tion of Kahler Manifolds. JV 159-168 ROBERT J. FINKELSTEIN / q-Field Theory 169-176 JEAN-LOUP GERVAIS and MIKHAIL V. SAVELIEV / Lotka—Volterra- Type Equations and Their Explicit Integration 177-180 Volume3 4 No.3 July 1995 Special Issue DEDICATED TO THE MEMORY OF JULIAN SCHWINGER (1918-1994) Foreword 181 V. BACH, J. FROHLICH, and I. M. SIGAL / Mathematical Theory of Nonrelativistic Matter and Radiation 183-201 ALAIN CONNES / Geometry from the Spectral Point of View 203-238 BERTHOLD-GEORG ENGLERT / Driven Systems with One Bound State 239-248 L. D. FADDEEV / Discrete Heisenberg—Weyl Group and Modular Group 249-254 S. FERRARA / Electromagnetic Duality Transformations in Supersymmetric Field Theories 255-274 ROBERT J. FINKELSTEIN / Transformation Theory of g-Quantum Mechanics 275-283 KIMBALL A. MILTON / Absence of Species Doubling in Finite-Element Quantum Electrodynamics 285-295 ULRICH W. RATHE and MARLAN O. SCULLY / Theoretical Basis for a New Subnatural Spectroscopy via Correlation Interferometry 297-307 JOHN H. SCHWARZ / Evidence for Nonperturbative String Symmetries 309-317 V.S. VARADARAJAN / Variations on a Theme of Schwinger and Weyl 319-326 Volume 34 No.4 August 1995 SEN-YUE LOU / Symmetries and Generalized W.. Algebra of the Modified KP Equation 327-331 A. P. ISAEV / Interrelations between Quantum Groups and Reflection Equation (Braided) Algebras 333-341 M. GINOCCHIO / Universal Expansion of the Powers of a Derivation 343-364 YIHUA YAN / On Exterior Boundary-Value Problems of the Helmholtz Equation Not Deduced from Waves 365-371 CONTENTS TO VOLUME 34 LUIZ C. DE ALBUQUERQUE, CARLOS FARINA, SILVIO J. RABELLO, and ARVIND N. VAIDYA / On the Physical Interpretation of Effective Actions Using Schwinger’s Formula 373-377 L. A. DICKEY / On the Constrained KP Hierarchy 379-384 STEPHAN DE BIEVRE and JACQUES RENAUD / The Indecomposable Representation of SO (2,2) on the One-Particle Space of the Massless Field in 1 + 1 Dimension 385-393 RHONDA J. HUGHES / Renormalization of the Relativistic Delta Potential in One Dimension 395-406 SIMON DAVIS / The Bosonic String Measure at Two and Three Loops and Symplectic Transformations of the Volume Form 407-413 Contents to Volume 34