Punctured groups for exotic fusion systems
Punctured groups for exotic fusion systems
复制标题
用于奇异融合系统的穿孔组
DOI:
10.1112/tlm3.12054
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发表时间:
2023
影响因子:
0.8
通讯作者:
Lynd, Justin
中科院分区:
文献类型:
--
作者:
Henke, Ellen;Libman, Assaf;Lynd, Justin
The transporter systems of Oliver and Ventura and the localities of Chermak are classes of algebraic structures that model the p$p$‐local structures of finite groups. Other than the transporter categories and localities of finite groups, important examples include centric, quasicentric, and subcentric linking systems for saturated fusion systems. These examples are, however, not defined in general on the full collection of subgroups of the Sylow group. We study herepunctured groups, a short name for transporter systems or localities on the collection of nonidentity subgroups of a finite p$p$‐group. As an application of the existence of a punctured group, we show that the subgroup homology decomposition on the centric collection is sharp for the fusion system. We also prove a Signalizer Functor Theorem for punctured groups and use it to show that the smallest Benson–Solomon exotic fusion system at the prime 2 has a punctured group, while the others do not. As for exotic fusion systems at odd primes p$p$, we survey several classes and find that in almost all cases, either the subcentric linking system is a punctured group for the system, or the system has no punctured group because the normalizer of some subgroup of order p$p$ is exotic. Finally, we classify punctured groups restricting to the centric linking system for certain fusion systems on extraspecial p$p$‐groups of order p3$p^3$.
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DOI:
--
发表时间:
1973
期刊:
影响因子:
--
作者:
Stephen D. Smith;A. Tyrer
通讯作者:
A. Tyrer
影响因子:
4.9
作者:
M. Aschbacher;A. Chermak
通讯作者:
A. Chermak
DOI:
10.1017/fms.2021.17
发表时间:
2021
期刊:
Sigma
影响因子:
--
作者:
Glauberman, George;Lynd, Justin
通讯作者:
Lynd, Justin
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
A. Chermak
通讯作者:
A. Chermak
影响因子:
--
作者:
Stefan Jackowski;J. McClure
通讯作者:
J. McClure