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Letters

• Instability of Quasi-Linear Hyperbolic Systems
  --- The Hamiltonian Dynamical System Approach ---
  ( Shinji Koga and Shinji Akiyama )
  pp.991-996
• Spin-State Transition in a Two-Dimensional Model with Lattice Distortion
  ( Koichi Takahashi )
  pp.997-1000
• Note on Interpretation of the Low-Mass Enhancement Observed in the γ γ → π⁺π^- Reaction
  ( Shigeo Minami )
  pp.1001-1005
• Longitudinal Asymmetries in the Supersymmetric Single Photon Production
  ( Tadashi Kon )
  pp.1006-1010
• Spontaneously Broken Horizontal SU(2) Gauge Symmetry and the Δ I = 1/2 Rule
  ( Okiyasu Shito )
  pp.1011-1015
• Reducing the Huge Symmetry Occurring in the Compactification of a String
  ( Jiro Soda )
  pp.1016-1021
• Chaos on the Super Riemann Surface
  ( Shuji Matsumoto and Yukinori Yasui )
  pp.1022-1027

Papers

General and Mathematical Physics

• Dynamics of Dense Discrete Systems
  --- High Order Effects ---
  ( Philip Rosenau )
  pp.1028-1042
• A Correction to the Hartree-Like Approximation in the Overdamped Sine-Gordon System
  --- Application of a Numerical Method to an Analytic Procedure ---
  ( Shogo Nakaya )
  pp.1043-1060
• Oscillatory and Excitable Behaviors in a Population of Model Neurons
  ( Hidetsugu Sakaguchi )
  pp.1061-1068
• Mutual Entrainment in Oscillator Lattices with Nonvariational Type Interaction
  ( Hidetsugu Sakaguchi, Shigeru Shinomoto and Yoshiki Kuramoto )
  pp.1069-1079

Condensed Matter and Statistical Physics

• Percolation Problem Describing ± J Ising Spin Glass System
  ( Yasuhiro Kasai and Ayao Okiji )
  pp.1080-1094

Astrophysics and Relativity

• General Formulation of the Gravitational Lens and Analysis of the Multiple Quasar PG1115 + 080
  ( Hiroshi Yoshida and Minoru Omote )
  pp.1095-1109
• Gauge-Invariant Perturbations in the Process of Isotropization of an Anisotropic Universe
  ( Mitsue Den )
  pp.1110-1125

Particles and Fields

• Lepton → Lepton + Photon Decays and Lepton g - 2 Factors in Gauge Theories
  ( T. Nagy and P. Vecsernyés )
  pp.1126-1139
• Generalized Hidden Local Symmetry and the A₁ Meson
  ( Masako Bando, Takanori Fujiwara and Koichi Yamawaki )
  pp.1140-1166
• Super Virasoro Algebra and Solvable Supersymmetric Quantum Field Theories
  ( Itaru Yamanaka and Ryu Sasaki )
  pp.1167-1184
• Supersymmetry in the Superstrings Induced from the Bosonic String
  ( Shin'ichi Nojiri )
  pp.1185-1196
• Thermodynamics of Open Bosonic Strings in Background Fields
  ( Hirotaka Kanasugi and Hidehiko Okada )
  pp.1197-1208
• A Construction of the Twisted Vertex Operators
  ( Haruhiko Terao )
  pp.1209-1216
• Inconsistency of the λ Φ⁴ Field Theory in High-Dimensions Constructed from the Broken-Symmetry Phase
  ( Kei-ichi Kondo )
  pp.1217-1248

Errata

• Theory of Many-Fermion System on Unitary-Transformation Method
  ( Kenji Suzuki )
  pp.1249-1249

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