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arXiv 1906.04885math.ATmath.GR
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同调、下中心序列和超平面排列

Homology, lower central series, and hyperplane arrangements

Richard D. Porter, Alexander I. Suciu

摘要:

我们探讨有限生成群通过研究幂零塔和各种李代数附加到这样的群体。我们的主要目标是在Postnikov塔的同构扩展问题的存在,某些交换图。这改写了G. Rybnikov在一个更一般的框架,并导致超平面安排的应用程序,从而我们表明,所有的幂零因子的可分解的安排组组合确定。

英文摘要:

We explore finitely generated groups by studying the nilpotent towers and the various Lie algebras attached to such groups. Our main goal is to relate an isomorphism extension problem in the Postnikov tower to the existence of certain commuting diagrams. This recasts a result of G. Rybnikov in a more general framework and leads to an application to hyperplane arrangements, whereby we show that all the nilpotent quotients of a decomposable arrangement group are combinatorially determined.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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