English

Morse inequalities for noncompact manifolds

Geometric Topology 2025-02-10 v2 Algebraic Topology Differential Geometry

Abstract

We establish Morse inequalities for a noncompact manifold with a cocompact and properly discontinuous action of a discrete group, where Morse functions are not necessarily invariant under the group action. The inequalities are given in terms of the L2L^2-Betti numbers and functions on the acting group which describe rough configurations of critical points of a Morse function.

Keywords

Cite

@article{arxiv.2411.04463,
  title  = {Morse inequalities for noncompact manifolds},
  author = {Tsuyoshi Kato and Daisuke Kishimoto and Mitsunobu Tsutaya},
  journal= {arXiv preprint arXiv:2411.04463},
  year   = {2025}
}

Comments

28 pages, the definition of a fundamental domain is modified

R2 v1 2026-06-28T19:50:59.869Z