English

Model categories of quiver representations

Representation Theory 2019-09-13 v2 Category Theory K-Theory and Homology

Abstract

Gillespie's Theorem gives a systematic way to construct model category structures on C(M)\mathscr{C}( \mathscr{M} ), the category of chain complexes over an abelian category M\mathscr{M}. We can view C(M)\mathscr{C}( \mathscr{M} ) as the category of representations of the quiver 21012\cdots \rightarrow 2 \rightarrow 1 \rightarrow 0 \rightarrow -1 \rightarrow -2 \rightarrow \cdots with the relations that two consecutive arrows compose to 00. This is a self-injective quiver with relations, and we generalise Gillespie's Theorem to other such quivers with relations. There is a large family of these, and following Iyama and Minamoto, their representations can be viewed as generalised chain complexes. Our result gives a systematic way to construct model category structures on many categories. This includes the category of NN-periodic chain complexes, the category of NN-complexes where N=0\partial^N = 0, and the category of representations of the repetitive quiver ZAn\mathbb{Z} A_n with mesh relations.

Keywords

Cite

@article{arxiv.1902.02387,
  title  = {Model categories of quiver representations},
  author = {Henrik Holm and Peter Jorgensen},
  journal= {arXiv preprint arXiv:1902.02387},
  year   = {2019}
}

Comments

34 pages. This is the final version which has been accepted for publication in Advances in Mathematics

R2 v1 2026-06-23T07:34:02.184Z