English

Exit path categories induced by group actions

Algebraic Topology 2025-11-13 v1

Abstract

We prove a structural result concerning the exit path category associated to a manifold MM equipped with a smooth action of a finite group GG. Specifically, the functor Π:Exit(M)Exit(M/G)\Pi: \mathsf{Exit}(M) \rightarrow \mathsf{Exit}(M/G) is a right fibration and Enter(M/G)\mathsf{Enter}(M/G) is classified by a natural functor Enter(M/G)OG\mathsf{Enter}(M/G) \rightarrow O_G, where OGO_G is the orbit category of GG. The main technical result manipulates exit paths to immediately exiting paths, enabling lifts of homotopies in M/GM/G to homotopies in MM.

Cite

@article{arxiv.2511.08907,
  title  = {Exit path categories induced by group actions},
  author = {Patrick Mayeda},
  journal= {arXiv preprint arXiv:2511.08907},
  year   = {2025}
}
R2 v1 2026-07-01T07:33:15.099Z