English

Eventually homological isomorphisms in recollements of derived categories

Representation Theory 2018-07-03 v1 Rings and Algebras

Abstract

For a recollement (DB,DA,DC)(\mathcal{D}B,\mathcal{D}A,\mathcal{D}C) of derived categories of algebras, we investigate when the functor j:DADCj^*:\mathcal{D}A\rightarrow\mathcal{D}C is an eventually homological isomorphism. In this context, we compare the algebras AA and CC with respect to Gorensteinness, singularity categories and the finite generation condition Fg for the Hochschild cohomology. The results are applied to stratifying ideals, triangular matrix algebras and derived discrete algebras.

Keywords

Cite

@article{arxiv.1807.00295,
  title  = {Eventually homological isomorphisms in recollements of derived categories},
  author = {Yongyun Qin},
  journal= {arXiv preprint arXiv:1807.00295},
  year   = {2018}
}
R2 v1 2026-06-23T02:47:13.955Z