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Ext Groups and Ext Functors In this note we discuss the Hom and Ext functors and their connection with extensions of Abelian groups. The theory we develop has an analogue in the category of R-modules for any ring R; how
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Document Date: 2002-11-26 15:03:54
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Ext Groups and Ext Functors In this note we discuss the Hom and Ext functors and their connection with extensions of Abelian groups. The theory we develop has an analogue in the category of R-modules for any ring R; how