Gorenstein projective modules over rings of Morita contexts

Q Guo, C Xi - arXiv preprint arXiv:2205.10567, 2022 - arxiv.org
By introducing semi-weak and weak compatibility of modules, we establish sufficient and
necessary conditions of Gorenstein-projective modules over rings of Morita contexts with …

[HTML][HTML] Relative Gorenstein dimensions over triangular matrix rings

D Bennis, R El Maaouy, JR García Rozas, L Oyonarte - Mathematics, 2021 - mdpi.com
Let A and B be rings, U a (B, A)-bimodule, and T= A 0 UB the triangular matrix ring. In this
paper, several notions in relative Gorenstein algebra over a triangular matrix ring are …

Silting objects and torsion pairs in comma categories

P Zhang, M Chen, D Liu - arXiv preprint arXiv:2207.04437, 2022 - arxiv.org
In this paper, we first give a characterization of silting objects in the comma category Assume
that C1 and C2 are two subcategories of left R-modules, D1 and D2 be two subcategories of …

Recollements induced by Frobenius pairs

Y Ma, J Hu, R Zhu - arXiv preprint arXiv:2109.00933, 2021 - arxiv.org
Let $ T $ be a right exact functor from an abelian category $\mathscr {B} $ into another
abelian category $\mathscr {A} $. Then there exists an abelian category, named comma …

Completeness of the induced cotorsion pairs in functor categories

Z Di, L Li, L Liang, F Xu - arXiv preprint arXiv:2102.05826, 2021 - arxiv.org
This paper focuses on a question raised by Holm and J {\o} rgensen, who asked if the
induced cotorsion pairs $(\Phi ({\sf X}),\Phi ({\sf X})^{\perp}) $ and $(^{\perp}\Psi ({\sf Y}),\Psi …

Ideal cotorsion pairs over one point extensions

H Zhu, B Du, Q Wang - Applied Mathematics-A Journal of Chinese …, 2022 - Springer
Let R [P] be the one point extension of ak-algebra R by a projective R-module P. We prove
that the extension of a complete ideal cotorsion pair in R-Mod is still a complete ideal …