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arXiv 2209.00524nlin.SImath-phmath.MP
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差分方程组、对称性与可积性条件

Systems of difference equations, symmetries and integrability conditions

Louis Brady, Pavlos Xenitidis

摘要:

我们考虑一类定义在基本四边形的${\mathbb{Z}}^2$格上的差分方程系统,定义它们的可消除和动态变量,并演示它们的用途。利用无穷对称族的存在性作为可积性判据,导出了可积性的必要条件,并将其应用于系统最低阶对称的构造.这些考虑是证明与三个系统的帮助下,从类的系统正在考虑。

英文摘要:

We consider a class of systems of difference equations defined on an elementary quadrilateral of the ${\mathbb{Z}}^2$ lattice, define their eliminable and dynamical variables, and demonstrate their use. Using the existence of infinite hierarchies of symmetries as integrability criterion, we derive necessary integrability conditions and employ them in the construction of the lowest order symmetries of a given system. These considerations are demonstrated with the help of three systems from the class of systems under consideration.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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