Group Isomorphism with Fixed Subnormal Chains
Group Isomorphism with Fixed Subnormal Chains
复制标题
具有固定次正规链的群同构
DOI:
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发表时间:
2015
期刊:
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通讯作者:
E. Luks
中科院分区:
文献类型:
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作者:
E. Luks
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.