arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2003.08900math-phmath.MPnlin.SI
收藏

格点KdV方程的离散Hirota约化

Discrete Hirota reductions associated with the lattice KdV equation

Andrew N. W. Hone, Theodoros E. Kouloukas

摘要:

我们研究了一类双有理映射的可积性,这类双有理映射是离散Hirota方程的简化,它与晶格KdV方程的行波解有关。特别地,对于格点上以有理数速度N/M运动的波的约化,其中N,M是互质整数,我们证明了当N + M是奇数时映射的Liouville可积性,并证明了一般情况下的各种性质.有两个主要成分,我们的建设:集群代数与每个广田双线性方程,它提供了不变的(前)辛和泊松结构;和连接的单值矩阵的敷料链的KdV行波减少。

英文摘要:

We study the integrability of a family of birational maps obtained as reductions of the discrete Hirota equation, which are related to travelling wave solutions of the lattice KdV equation. In particular, for reductions corresponding to waves moving with rational speed N/M on the lattice, where N,M are coprime integers, we prove the Liouville integrability of the maps when N + M is odd, and prove various properties of the general case. There are two main ingredients to our construction: the cluster algebra associated with each of the Hirota bilinear equations, which provides invariant (pre)symplectic and Poisson structures; and the connection of the monodromy matrices of the dressing chain with those of the KdV travelling wave reductions.

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。

↑