Gorenstein Flat Comodules
Bulletin of the Iranian Mathematical Society(2021)
摘要
In this paper, we introduce the concept of Gorenstein flat comodules and give a description of colocalization of Gorenstein flat comodules. A right C -comodule M is called a Gorenstein flat comodule if there exists an exact sequence ⋯→ F_1→ F_0→ F^0→ F^1→⋯ of flat comodules with M≅Ker(F^0→ F^1) and such that Com_C(-,I) leaves the sequence exact whenever I is a finite-dimensional right C -comodule and id_C(I)<∞ . Some properties of Gorenstein flat comodules are studied.
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关键词
Comodule, Gorenstein flat comodule, Gorenstein projective comodule, Colocalization
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