On the centralizer of generic braids

On the centralizer of generic braids
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浅谈通用辫子的扶正器

DOI:
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发表时间:
2018
期刊:
Journal of group theroy
影响因子:
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通讯作者:
D. Valladares
D. Valladares
中科院分区:
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文献类型:
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作者:
J. González;D. Valladares

文献摘要

被引文献

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摘要本文从Garside理论的角度研究了辫状体的中心化问题,结果表明,由于一般辫状体的超顶集具有非常特殊的结构,可以非常有效地计算生成子的极小集。本文提出了一种计算辫状体中心化器的算法,该辫状体的一般情况复杂度在输入长度上是二次的,并且在一般情况下输出一个最小生成器集。
Abstract We study the centralizer of a braid from the point of view of Garside theory, showing that generically a minimal set of generators can be computed very efficiently, as the ultra summit set of a generic braid has a very particular structure. We present an algorithm to compute the centralizer of a braid whose generic-case complexity is quadratic on the length of the input, and which outputs a minimal set of generators in the generic case.