Group Isomorphism with Fixed Subnormal Chains

Group Isomorphism with Fixed Subnormal Chains
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具有固定次正规链的群同构

DOI:
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发表时间:
2015
期刊:
arXiv.org
影响因子:
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通讯作者:
E. Luks
E. Luks
中科院分区:
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文献类型:
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作者:
E. Luks

文献摘要

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在最近的工作中,Rosenbaum和瓦格纳证明了显式列出的n阶p-群的同构可以在n^{frac{1}{2}log_pn + O(p)}$时间内检验,大约是经典界的平方根。$O(p)$项完全是由于在两个群中匹配固定合成序列的同构测试的$n^{O(p)}$成本。在这里,我们专注于固定的组成系列的子问题,并表现出多项式时间的算法,是有效的一般群体。随后的论文将在相同的时间范围内构造标准形式。
In recent work, Rosenbaum and Wagner showed that isomorphism of explicitly listed $p$-groups of order $n$ could be tested in $n^{frac{1}{2}log_p n + O(p)}$ time, roughly a square root of the classical bound. The $O(p)$ term is entirely due to an $n^{O(p)}$ cost of testing for isomorphisms that match fixed composition series in the two groups. We focus here on the fixed-composition-series subproblem and exhibit a polynomial-time algorithm that is valid for general groups. A subsequent paper will construct canonical forms within the same time bound.