Steinberg 之后饱和融合系统轨道空间的可缩性
Contractibility of the orbit space of a saturated fusion system after Steinberg
AI总结:
本文扩展了 Steinberg 利用离散 Morse 理论证明有限群偏序集轨道空间可缩性的方法,进一步证明了饱和融合系统轨道空间的可缩性。
摘要:
最近,Steinberg 利用离散 Morse 理论给出了 Symonds 一个定理的新证明,即有限群的非平凡 $p$-子群偏序集的轨道空间是可缩的。我们从两个方面扩展了 Steinberg 的论证,涵盖了该定理已知的更一般版本。特别地,遵循 Libman 的策略,我们为饱和融合系统轨道空间的可缩性给出了一个离散 Morse 理论的论证。
英文摘要:
Recently, Steinberg used discrete Morse theory to give a new proof of a theorem of Symonds that the orbit space of the poset of nontrivial $p$-subgroups of a finite group is contractible. We extend Steinberg's argument in two ways, covering more general versions of the theorem that were already known. In particular, following a strategy of Libman, we give a discrete Morse theoretic argument for the contractibility of the orbit space of a saturated fusion system.
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。