Invariants of FP-Projective Dimensions Under Cleft Extensions
Invariants of FP-Projective Dimensions Under Cleft Extensions
复制标题
裂口延伸下 FP 投影尺寸的不变量
DOI:
10.1142/s1005386713000667
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发表时间:
2013-10
影响因子:
0.3
通讯作者:
Fang Li
中科院分区:
文献类型:
--
作者:
Xiuli Chen;Haiyan Zhu;Fang Li
Let H be a finite dimensional Hopf algebra and A be an algebra over a fixed field k. Firstly, it is proved that the left FP-projective dimension is invariant under cleft extensions when H is semisimple and A is left coherent. Secondly, using (co)induction functors, we study the relations between FP-projective dimensions in A # H-Mod and the counterparts in AH-Mod. Finally, we characterize the FP-projective preenvelopes (resp., precovers) under H*-extensions and cleft extensions, respectively.
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