Basis-conjugating automorphisms of a free group and associated Lie algebras

Basis-conjugating automorphisms of a free group and associated Lie algebras
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自由群和相关李代数的基共轭自同构

DOI:
10.2140/gtm.2008.13.147
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发表时间:
2006
期刊:
arXiv: Group Theory
影响因子:
--
通讯作者:
Jie Wu
Jie Wu
中科院分区:
--
文献类型:
--
作者:
F. Cohen;Jonathan Pakianathan;V. Vershinin;Jie Wu

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设F_n =表示生成元为{x_1,...,x_n}。Nielsen和Magnus描述了F_n的自同构群到整数上一般线性群的标准满射的核的生成元。特别是其中的自同构chi_{k,i},它通过生成器x_i共轭生成器x_k,使得x_j对于j而不是k是固定的。本文给出了由chi_{k,i}(i<k)生成的群的降中心列所得到的上同调环和李代数的计算.对于所有chi_{k,i}生成的群,得到了部分结果.
Let F_n = denote the free group with generators {x_1,...,x_n}. Nielsen and Magnus described generators for the kernel of the canonical epimorphism from the automorphism group of F_n to the general linear group over the integers. In particular among them are the automorphisms chi_{k,i} which conjugate the generator x_k by the generator x_i leaving the x_j fixed for j not k. A computation of the cohomology ring as well as the Lie algebra obtained from the descending central series of the group generated by chi_{k,i} for i<k is given here. Partial results are obtained for the group generated by all chi_{k,i}.
关于 Torelli 群的第三有理上同调群
DOI: --
发表时间: 2010
期刊:
影响因子: --
作者:
Okada;et al.;Hirokazu Saiwai;幸博和;幸博和;幸博和;幸博和;幸博和;幸博和;Masatoshi Sato;佐藤正寿;佐藤正寿;佐藤正寿;佐藤正寿;佐藤正寿;M.Sato;佐藤正寿;佐藤正寿;佐藤正寿;佐藤正寿;佐藤正寿;佐藤正寿;M.Sato;M.Sato;Masatoshi Sato;佐藤正寿
通讯作者: 佐藤正寿
DOI: --
发表时间: --
期刊: Mathematical Proceedings Cambridge Philosophical Society (印刷中)
影响因子: --
作者:
Satoshi Takahashi;Kazuo Takatsuka;Takao SATOH;Takao SATOH
通讯作者: Takao SATOH