Gorenstein projective modules and recollements over triangular matrix rings
Gorenstein projective modules and recollements over triangular matrix rings
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三角矩阵环上的 Gorenstein 射影模和重设
DOI:
10.1080/00927872.2020.1775240
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发表时间:
2020
影响因子:
0.7
通讯作者:
Zhu Haiyan
中科院分区:
文献类型:
--
作者:
Li Huanhuan;Zheng Yuefei;Hu Jiangsheng;Zhu Haiyan
Let T=(RM0S) be a triangular matrix ring withRandSrings andanR–S-bimodule. We describe Gorenstein projective modules overT. In particular, we refine a result of Enochs, Cortés-Izurdiaga, and Torrecillas [Gorenstein conditions over triangular matrix rings, J. Pure Appl. Algebra 218 (2014), no. 8, 1544-1554]. Also, we consider when the recollement of Db(T‐Mod) restricts to a recollement of its subcategory Db(T‐Mod)fgp consisting of complexes with finite Gorenstein projective dimension. As applications, we obtain recollements of the stable category T‐GProj¯ and recollements of the Gorenstein defect category Ddef(T‐Mod).