A computer program for the Birkhoff series of area preserving maps

Title of program: BIRKHOFF Catalogue Id: ACCD_v1_0 Nature of problem The problem of transforming a given polynomial area preserving mapping of the plane to itself into a twist mapping is considered following the Birkhoff perturbation method. Versions of this program held in the CPC repository in Mendeley Data ACCD_v1_0; BIRKHOFF; 10.1016/0010-4655(84)90071-7 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)程序名称：BIRKHOFF 目录编号：ACCD_v1_0 问题概述 本程序研究的问题为：遵循伯克霍夫摄动法（Birkhoff perturbation method），将给定的平面多项式保面积自映射转化为扭转映射（twist mapping）。 该程序在孟德尔莱数据（Mendeley Data）的CPC库中留存的版本如下： ACCD_v1_0; BIRKHOFF; 10.1016/0010-4655(84)90071-7 本程序源自贝尔法斯特女王大学（Queen's University Belfast）所维护的CPC程序库（1969-2019年）