计算自由群中的固定闭包
Computing fixed closures in free groups
摘要:
设$F$是一个随机生成的自由群。我们提出了一个算法,这样,给定一个子群$H\leqslant F$,决定是否$H$是固定的子群的一些家庭的自同构,或家庭的自同态$F$,并在肯定的情况下,发现这样的家庭。该算法结合了组合方法和几何方法。
英文摘要:
Let $F$ be a finitely generated free group. We present an algorithm such that, given a subgroup $H\leqslant F$, decides whether $H$ is the fixed subgroup of some family of automorphisms, or family of endomorphisms of $F$ and, in the affirmative case, finds such a family. The algorithm combines both combinatorial and geometric methods.
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。