Detecting and determining preserved measures and integrals of birational maps

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2022-01-01 DOI:10.3934/jcd.2022014

E. Celledoni, C. Evripidou, D. McLaren, B. Owren, G. Quispel, B. Tapley

引用次数: 5

Abstract

In this paper we use the method of discrete Darboux polynomials to calculate preserved measures and integrals of rational maps. The approach is based on the use of cofactors and Darboux polynomials and relies on the use of symbolic algebra tools. Given sufficient computing power, most, if not all, rational preserved integrals can be found (and even some non-rational ones). We show, in a number of examples, how it is possible to use this method to both determine and detect preserved measures and integrals of the considered rational maps, thus lending weight to a previous ansatz [2]. Many of the examples arise from the Kahan-Hirota-Kimura discretization of completely integrable systems of ordinary differential equations.

查看原文本刊更多论文

检测和确定两地地图的保存度量和积分

本文利用离散达布多项式的方法计算有理图的保留测度和积分。该方法基于协因式和达布多项式的使用，并依赖于符号代数工具的使用。给定足够的计算能力，可以找到大多数(如果不是全部的话)保留的有理积分(甚至是一些非理性积分)。在一些例子中，我们展示了如何使用这种方法来确定和检测所考虑的有理映射的保留测度和积分，从而为之前的分析提供权重[2]。许多例子来自Kahan-Hirota-Kimura对完全可积常微分方程系统的离散化。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.