2 citations · 4 across the 4 of their papers we have counts for
7 papers
Quasi-projective dimension and Gorenstein projective dimension
Yongyun Qin, Lanlan Yang
Gheibi, Jorgensen and Takahashi recently introduced the quasi-projective dimension, a homological invariant that extends the classical projective dimension. In this paper, we inves…
Eventually homological isomorphisms and Gorenstein projective modules
Yongyun Qin
We prove that a certain eventually homological isomorphism between module categories induces a triangle equivalence between their singularity categories, Gorenstein defect categori…
Reduction techniques of singular equivalences
Yongyun Qin
It is shown that a singular equivalence induced by tensoring with a suitable complex of bimodules defines a singular equivalence of Morita type with level, in the sense of Wang. Th…
Singular equivalences and Auslander-Reiten conjecture
Yiping Chen, Wei Hu, Yongyun Qin +1
Auslander-Reiten conjecture, which says that an Artin algebra does not have any non-projective generator with vanishing self-extensions in all positive degrees, is shown to be inva…
Recollements, Cohen-Macaulay Auslander algebras and Gorenstein projective conjecture
Yongyun Qin
It is shown that a 4-recollement of derived categories of CM-finite algebras induces a 2-recollement of the corresponding Cohen-Macaulay Auslander algebras, which generalises the m…
Eventually homological isomorphisms in recollements of derived categories
Yongyun Qin
For a recollement of derived categories of algebras, we investigate when the functor is an even…