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Representations of U(2∞) and the Value of the Fine Structure Constant
 
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William H. Klink
 SIGMA 1 (2005), 028, 8 pages   [ abs   pdf   ps ]
 
 
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Integrable Anisotropic Evolution Equations on a Sphere
 
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Anatoly G. Meshkov and Maxim Ju. Balakhnev
 SIGMA 1 (2005), 027, 11 pages   [ abs   pdf   ps ]
 
 
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Conservation Laws of Discrete Korteweg-de Vries Equation
 
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Olexandr G. Rasin and Peter E. Hydon
 SIGMA 1 (2005), 026, 6 pages   [ abs   pdf   ps ]
 
 
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Compact Simple Lie Groups  and Their C-, S-, and E-Transforms
 
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Jiri Patera
 SIGMA 1 (2005), 025, 6 pages   [ abs   pdf   ps ]
 
 
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Symmetry Properties  of Autonomous Integrating Factors
 
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Sibusiso Moyo and P.G.L. Leach
 SIGMA 1 (2005), 024, 12 pages   [ abs   pdf   ps ]
 
 
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Characteristic Algebras of Fully Discrete Hyperbolic Type Equations
 
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Ismagil T. Habibullin
 SIGMA 1 (2005), 023, 9 pages   [ abs   pdf   ps ]
 
 
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Noether Symmetries and Critical Exponents
 
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Yuri Bozhkov
 SIGMA 1 (2005), 022, 12 pages   [ abs   pdf   ps ]
 
 
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Pachner Move 3 –> 3 and Affine Volume-Preserving Geometry in R3
 
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Igor G. Korepanov
 SIGMA 1 (2005), 021, 7 pages   [ abs   pdf   ps ]
 
 
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Exact Propagators for Soliton Potentials
 
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Andrey M. Pupasov and Boris F. Samsonov
 SIGMA 1 (2005), 020, 7 pages   [ abs   pdf   ps ]
 
 
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Transverse Evolution Operator for the Gross-Pitaevskii Equation in Semiclassical Approximation
 
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Alexey Borisov, Alexander Shapovalov and Andrey Trifonov
 SIGMA 1 (2005), 019, 17 pages   [ abs   pdf   ps ]
 
 
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Ermakov's Superintegrable Toy and Nonlocal Symmetries
 
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P.G.L. Leach, A. Karasu (Kalkanli), M.C. Nucci and K. Andriopoulos
 SIGMA 1 (2005), 018, 15 pages   [ abs   pdf   ps ]
 
 
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Subgroups of the Group of Generalized Lorentz Transformations and Their Geometric Invariants
 
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George Bogoslovsky
 SIGMA 1 (2005), 017, 9 pages     [ abs   pdf   ps ]
 
 
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Representations of the Quantum Algebra suq(1,1)
and Discrete q-Ultraspherical Polynomials
 
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Valentyna Groza
 SIGMA 1 (2005), 016, 7 pages     [ abs   pdf   ps ]
 
 
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Second Order Superintegrable Systems in Three Dimensions
 
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Willard Miller
 SIGMA 1 (2005), 015, 17 pages   [ abs   pdf   ps ]
 
 
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On Chaotic Dynamics in Rational Polygonal Billiards
 
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Valery Kokshenev
 SIGMA 1 (2005), 014, 9 pages     [ abs   pdf   ps ]
 
 
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Simple Derivation of Quasinormal Modes for Arbitrary Spins
 
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Iosif Khriplovich and Gennady Ruban
 SIGMA 1 (2005), 013, 6 pages     [ abs   pdf   ps ]
 
 
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Radiation Reaction, Renormalization and Poincaré Symmetry
 
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Yurij Yaremko
 SIGMA 1 (2005), 012, 10 pages   [ abs   pdf   ps ]
 
 
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Connections Between Symmetries and Conservation Laws
 
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George Bluman
 SIGMA 1 (2005), 011, 16 pages   [ abs   pdf   ps ]
 
 
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A Gentle (without Chopping) Approach to the Full Kostant-Toda Lattice
 
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Pantelis A. Damianou and Franco Magri
 SIGMA 1 (2005), 010, 12 pages   [ abs   pdf   ps ]
 
 
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Group Classification of the General Evolution Equation: Local and Quasilocal Symmetries
 
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Renat Zhdanov and Victor Lahno
 SIGMA 1 (2005), 009, 7 pages      [ abs   pdf   ps ]
 
 
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Spectra of Observables in the q-Oscillator and q-Analogue of the Fourier Transform
 
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Anatoliy U. Klimyk
 SIGMA 1 (2005), 008, 17 pages   [ abs   pdf   ps ]
 
 
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Exact Solutions and Symmetry Operators for the Nonlocal Gross-Pitaevskii Equation with Quadratic Potential
 
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Alexander Shapovalov, Andrey Trifonov and Alexander Lisok
 SIGMA 1 (2005), 007, 14 pages   [ abs   pdf   ps ]
 
 
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Structure of Symmetry Groups via Cartan's Method: Survey of Four Approaches
 
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Oleg I. Morozov
 SIGMA 1 (2005), 006, 14 pages   [ abs   pdf   ps ]
 
 
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Andrew Lenard: A Mystery Unraveled
 
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Jeffery Praught and Roman G. Smirnov
 SIGMA 1 (2005), 005, 7 pages     [ abs   pdf   ps ]
 
 
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A System of n = 3 Coupled Oscillators with Magnetic Terms:
Symmetries and Integrals of Motion
 
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Manuel F. Rañada
 SIGMA 1 (2005), 004, 7 pages     [ abs   pdf   ps ]
 
 
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Transient Phenomena in Quantum Bound
States Subjected to a Sudden Perturbation
 
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Marcos Moshinsky and Emerson Sadurní
 SIGMA 1 (2005), 003, 9 pages     [ abs   pdf   ps ]
 
 
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Multi-Instantons in Higher Dimensions
and Superstring Solitons
 
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Eugene K. Loginov
 SIGMA 1 (2005), 002, 4 pages     [ abs   pdf   ps ]
 
 
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The Differential Form Method for Finding Symmetries
 
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B. Kent Harrison
 SIGMA 1 (2005), 001, 12 pages   [ abs   pdf   ps ]
 
 
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