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- W1559487570 abstract "The category of left modules over right coherent rings of finite weak global dimension has several nice features. For example, every left module over such a ring has a flat cover (Belshoff, Enochs, Xu) and, if the weak global dimension is at most two, every left module has a flat envelope (Asensio, Martfnez). We will exploit these features of this category to study its objects. In particular, we will consider orthogonal complements (relative to the extension functor) of several classes of modules in this category. In the case of a commutative ring we describe an idempotent radical on its category of modules which, when the weak global dimension does not exceed 2, can be used to analyze the structure of the flat envelopes and of the ring itself." @default.
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- W1559487570 date "1998-01-01" @default.
- W1559487570 modified "2023-09-26" @default.
- W1559487570 title "Coherent rings of finite weak global dimension" @default.
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- W1559487570 doi "https://doi.org/10.1090/s0002-9939-98-04191-4" @default.
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