English

Actions of large finite groups on manifolds

Geometric Topology 2023-12-19 v3 Algebraic Topology Group Theory

Abstract

In this paper we survey some recent results on actions of finite groups on topological manifolds. Given an action of a finite group GG on a manifold XX, these results provide information on the restriction of the action to a subgroup of GG of index bounded above by a number depending only on XX. Some of these results refer to the algebraic structure of the group, such as being abelian, or nilpotent, or admitting a generating subset of controlled size; other results refer to the geometry of the action, e.g. to the existence of fixed points, to the collection of stabilizer subgroups, or to the action on cohomology.

Keywords

Cite

@article{arxiv.2303.07784,
  title  = {Actions of large finite groups on manifolds},
  author = {Ignasi Mundet i Riera},
  journal= {arXiv preprint arXiv:2303.07784},
  year   = {2023}
}

Comments

33 pages, the proof of Theorem 4.4 has been moved to arXiv:2112.05599(v2), comments welcome!