English

Algebraic Morse theory via Homological Perturbation Lemma

K-Theory and Homology 2025-07-22 v2 Rings and Algebras

Abstract

As a generalization of the classical killing-contractible-complexes lemma, we present algebraic Morse theory via homological perturbation lemma, in a form more general than existing presentations in the literature. Two-sided Anick resolutions due to E.~Sk\"{o}ldberg are generalised to algebras given by quivers with relations and a minimality criterion is provided as well. Two applications of algebraic Morse theory are presented. It is shown that the Chinese algebra of rank n1n\geq 1 is homologically smooth and of global dimension n(n+1)2\frac{n(n+1)}{2}, and the minimal two-sided projective resolution of a Koszul algebra is constructed.

Keywords

Cite

@article{arxiv.2404.10165,
  title  = {Algebraic Morse theory via Homological Perturbation Lemma},
  author = {Jun Chen and Yuming Liu and Guodong Zhou},
  journal= {arXiv preprint arXiv:2404.10165},
  year   = {2025}
}