arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1612.04584math.AT
收藏

二次模和流形的自同构群的同调稳定性

Homological Stability of automorphism groups of quadratic modules and manifolds

Nina Friedrich

摘要:

证明了有限稳定秩环上的一般线性群和有限酉稳定秩环上的二次模的酉群的同调稳定性。特别地,我们不假设模和二次模在任何意义上都是良好行为的:例如,二次型可以是奇异的。这分别推广了van der Kallen和Mirzai-van der Kallen的结果.将这些结果与Galatius-Randal-Williams引入的证明2n > 4维单连通流形模空间同调稳定性的方法相结合,我们得到了Galatius-Randal-Williams的结果到虚多环基本群的推广.

英文摘要:

We prove homological stability for both general linear groups of modules over a ring with finite stable rank and unitary groups of quadratic modules over a ring with finite unitary stable rank. In particular, we do not assume the modules and quadratic modules to be well-behaved in any sense: for example, the quadratic form may be singular. This extends results by van der Kallen and Mirzaii--van der Kallen respectively. Combining these results with the machinery introduced by Galatius--Randal-Williams to prove homological stability for moduli spaces of simply-connected manifolds of dimension 2n > 4, we get an extension of their result to the case of virtually polycyclic fundamental groups.

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。

↑