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Itogi Nauki i Tekhniki. Sovremennaya Matematika i ee Prilozheniya. Tematicheskie Obzory, 2017, Volume 140, Pages 30–42
(Mi into232)
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This article is cited in 3 scientific papers (total in 3 papers)
On one integrable discrete system
E. V. Pavlovaa, I. T. Habibullinbc, A. R. Khakimovac a Ufa State Petroleum Technological University
b Institute of Mathematics with Computing Centre, Ufa Science Centre, Russian Academy of Sciences, Ufa
c Bashkir State University, Ufa
Abstract:
In this paper, we study a system of nonlinear equations on a square graph related to the affine algebra $A^{(1)}_1$. This system is the simplest representative of the class of discrete systems corresponding to affine Lie algebras. We find the Lax representation and construct hierarchies of higher symmetries. In neighborhoods of singular points $\lambda=0$ and $\lambda=\infty$, we construct formal asymptotic expansions of eigenfunctions of the Lax pair and, based on these expansions, find series of local conservation laws for the system considered.
Keywords:
Lax pair, higher symmetry, conservation law, recursion operator, formal diagonalization.
Citation:
E. V. Pavlova, I. T. Habibullin, A. R. Khakimova, “On one integrable discrete system”, Differential equations. Mathematical physics, Itogi Nauki i Tekhniki. Sovrem. Mat. Pril. Temat. Obz., 140, VINITI, M., 2017, 30–42; Journal of Mathematical Sciences, 241:4 (2019), 409–422
Linking options:
https://www.mathnet.ru/eng/into232 https://www.mathnet.ru/eng/into/v140/p30
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