Categories of Modules over Endomorphism Rings

by Faticoni, Theodore G.

• ISBN13: 9780821825549
• ISBN10: 0821825542
• Format: Paperback
• Copyright: 1993-05-01
• Publisher: Amer Mathematical Society

Summary

The goal of this work is to develop a functional transfer of properties between a module A and the category *M *E of right modules over its endomorphism ring *E that is more sensitive than the traditional starting point Hom (A, .). The main result is a factorization q *[A t*[ of the left adjoint T *A of Hom(, .), where t*[ is a category equivalence and q*[ is a forgetful functor. Applications include a characterization of the finitely generated submodules of the right *E-modules Hom (*A), a connection between quasi-projective modules and flat modules, an extension of some recent work on endomorphism rings of *S-quasi-projective modules, an extension of Fuller's Theorem, characterizations of several self-generating properties and injective properties, and a connection between *S-self-generators and quasi-projective modules.

Table of Contents

Construction of the categories

Tensor and $\operatorname{Hom}$ functors

Category equivalences Special morphisms

Category Equivalences for $H_A$

Projective properties in ${\mathcal M}({\mathcal P}_A)$

Injective properties

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