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math.KT2013
Special precovers and preenvelopes of complexes
Zhanping Wang, Zhongkui Liu
The notion of an complex (for a given class of -modules ) was introduced by Gillespie: a complex is called complex if is exact a…
math.KT2013★ 5 cited
Stability of strongly Gorenstein flat modules
Zhanping Wang, Zhongkui Liu
A left -module is called two-degree Ding projective if there exists an exact sequence $...\longrightarrow D_{1}\longrightarrow D_{0}\longrightarrow D_{-1}\longrightarrow D_{…