English

Two-term silting and $\tau$-cluster morphism categories

Representation Theory 2024-10-22 v5 Category Theory

Abstract

We generalise τ\tau-cluster morphism categories to the setting of non-positive dg algebras with finite dimensional cohomology in all degrees. The compatibility of silting reduction with support τ\tau-tilting reduction will be an essential ingredient when linking our definition to those of Buan--Marsh and Buan--Hanson.

Keywords

Cite

@article{arxiv.2110.03472,
  title  = {Two-term silting and $\tau$-cluster morphism categories},
  author = {Erlend D. Børve},
  journal= {arXiv preprint arXiv:2110.03472},
  year   = {2024}
}

Comments

35 pages. v3: {\S}2, which previously included a flawed definition, has been removed, {\S}2 (previously {\S}3) considerably reshaped. v4: Thm. 5.3 has been removed. Contact information updated. v5: Setting generalised to non-positive dg algebras with finite dimensional cohomology in all degrees, Section 5 removed, substantial additions to some proofs

R2 v1 2026-06-24T06:42:26.431Z