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arXiv 0709.4407math.GRmath.GN
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利用幂零元计算自由群的扭共轭类

Computing twisted conjugacy classes in free groups using nilpotent quotients

P. Christopher Staecker

摘要:

目前还没有计算自由群中扭共轭类的代数算法。提出了一种利用幂零子判定扭曲共轭关系的新方法。我们的技术是一般的阿贝尔化方法,但承认显着更高的成功率。我们目前的实验结果证明了该技术的有效性,并详细说明了它如何可以应用于表面群和双扭曲共轭的相关设置。

英文摘要:

There currently exists no algebraic algorithm for computing twisted conjugacy classes in free groups. We propose a new technique for deciding twisted conjugacy relations using nilpotent quotients. Our technique is generalization of the common abelianization method, but admits significantly greater rates of success. We present experimental results demonstrating the efficacy of the technique, and detail how it can be applied the related settings of surface groups and doubly twisted conjugacy.

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