Singularity categories with respect to Ding projective modules
Singularity categories with respect to Ding projective modules
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DOI:
10.1007/s10114-017-6209-0
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发表时间:
2017-01
期刊:
影响因子:
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通讯作者:
Wen Jing Chen;Zhongkui Liu;Xiao Yan Yang
中科院分区:
文献类型:
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作者:
Wen Jing Chen;Zhongkui Liu;Xiao Yan Yang
We introduce the singularity category with respect to Ding projective modules,Ddpsgb(R), as the Verdier quotient of Ding derived categoryDDPb(R) by triangulated subcategoryKb(DP), and give some triangle equivalences. AssumeDPis precovering. We show thatDDPb(R) ≈K−,dpb(DP) andDdpsgb(R) ≈Ddefectb(R). We prove that eachR-module is of finite Ding projective dimension if and only ifDdpsgb(R) = 0.