English

On the relation between relative rigid and support tilting

Representation Theory 2020-03-31 v1

Abstract

Let B be an extriangulated category with enough projectives and enough injectives. Let C be a fully rigid subcategory of B which admits a twin cotorsion pair ((C,K),(K,D)). The quotient category B/K is abelian, we assume that it is hereditary and has finite length. In this article, we study the relation between support tilting subcategories of B/K and maximal relative rigid subcategories of B. More precisely, we show that the image of any cluster tilting subcategory of B is support tilting in B/K and any support tilting subcategory in B/K can be lifted to a unique relative maximal rigid subcategory in B. We also give a bijection between these two classes of subcategories if C is generated by an object.

Keywords

Cite

@article{arxiv.2003.12788,
  title  = {On the relation between relative rigid and support tilting},
  author = {Yu Liu and Panyue Zhou},
  journal= {arXiv preprint arXiv:2003.12788},
  year   = {2020}
}

Comments

14 pages

R2 v1 2026-06-23T14:30:13.988Z