English

Merging boundary critical points of a Morse function

Geometric Topology 2024-10-29 v2

Abstract

In 2015, Borodzik, N\'emethi and Ranicki proved that an interior critical point can be pushed to the boundary, where it splits into two boundary critical points. In this paper, we show that two critical points at the boundary can be, under specific assumptions, merged into a single critical point in the interior. That is, we reverse the original construction.

Cite

@article{arxiv.2304.11024,
  title  = {Merging boundary critical points of a Morse function},
  author = {Maciej Borodzik and Marcin Mielniczuk},
  journal= {arXiv preprint arXiv:2304.11024},
  year   = {2024}
}

Comments

14 pages, 4 figures; minor revision, version accepted by Proc. AMS

R2 v1 2026-06-28T10:13:49.477Z