arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1808.00512math-phmath.CAmath.DSmath.MP
收藏

含一重根的含时多项式与新的可解动力系统

Time-dependent polynomials with one multiple root and new solvable dynamical systems

Oksana Bihun

摘要:

考虑了z变量中的含时一元多项式,它有N个不同的根,使得只有一个根的重数m>= 2.对于k = 1,2,N个根的k阶导数表示为多项式的前N个系数的j <= k阶导数和根本身的j <= k-1阶导数。这些关系被用来构造新的代数可解的一阶系统的常微分方程以及N体问题。多个例子可解的等值线(所有的解决方案是周期相同的周期)2和3体问题提供。

英文摘要:

A time-dependent monic polynomial in the z variable with N distinct roots such that exactly one root has multiplicity m>=2 is considered. For k=1,2, the k-th derivatives of the N roots are expressed in terms of the derivatives of order j<= k of the first N coefficients of the polynomial and of the derivatives of order j<= k-1 of the roots themselves. These relations are utilized to construct new classes of algebraically solvable first order systems of ODEs as well as N-body problems. Multiple examples of solvable isochronous (all solutions are periodic with the same period) 2- and 3-body problems are provided.

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。

↑