Description: Rings, Modules, and the Total, Paperback by Kasch, Friedrich; Mader, Adolf, ISBN 3764371250, ISBN-13 9783764371258, Brand New, Free shipping in the US In a nutshell, th deals with direct decompositions of modules and associated concepts. The central notion of "partially invertible homomorphisms”, namely those that are factors of a non-zero idempotent, is introduced in a very accessible fashion. Units and regular elements are partially invertible. The "total” consists of all elements that are not partially invertible. The total contains the radical and the singular and cosingular submodules, but while the total is closed under right and left multiplication, it may not be closed under addition. Cases are discussed where the total is additively closed. The total is particularly suited to deal with the endomorphism ring of the direct sum of modules that all have local endomorphism rings and is applied in this case. Further applications are given for torsion-free Abelian groups.
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Book Title: Rings, Modules, and the Total
Number of Pages: X, 138 Pages
Language: English
Publication Name: Rings, Modules, and the Total
Publisher: Springer Basel A&G
Subject: Algebra / Abstract, Algebra / General
Publication Year: 2004
Type: Textbook
Item Weight: 14.8 Oz
Subject Area: Mathematics
Author: Friedrich Kasch, Adolf Mader
Item Length: 9.6 in
Series: Frontiers in Mathematics Ser.
Item Width: 6.7 in
Format: Trade Paperback
