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arXiv 1111.1554math.GR
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双曲群中有限群元列表的共轭问题

The conjugacy problem in hyperbolic groups for finite lists of group elements

David J. Buckley, Derek F. Holt

摘要:

设G是一个具有给定有限生成集的字双曲群,G的各种标准结构和常数都已预先计算好。一个(非实用)算法描述,作为输入两个列表A和B,每个组成的m字的发电机和其逆,确定是否列表共轭G,并返回一个共轭元素应该存在。该算法运行时间为O(m mu)$,其中mu是两个列表中元素长度的上界。类似地,概述了一种算法,该算法计算A的中心化器的生成器,具有相同的运行时间界限。

英文摘要:

Let G be a word-hyperbolic group with given finite generating set, for which various standard structures and constants have been pre-computed. A (non-practical) algorithm is described that, given as input two lists A and B, each composed of m words in the generators and their inverses, determines whether or not the lists are conjugate in G, and returns a conjugating element should one exist. The algorithm runs in time O(m mu)$, where mu is an upper bound on the lengths of elements in the two lists. Similarly, an algorithm is outlined that computes generators of the centraliser of A, with the same bound on running time.

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。

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