Module Theory

Name: Module Theory
Brand: Birkhauser Verlag AG
SKU: 9783764359089
Price: 551.58 RON
Availability: InStock

Endomorphism rings and direct sum decompositions in some classes of modules

Autor: Alberto Facchini

Limbă:

Legare: Copertă tare

Editura: Birkhauser Verlag AG

Disponibilitate: În depozitul extern

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551.58 lei

The purpose in writing this expository monograph has been three-fold. First, the author set out to p...

Informații despre carte

Autor

Alberto Facchini

Limbă

engleză

Legare

Carte - Copertă tare

Publicat

1998

Pagini

288

EAN

9783764359089

ISBN

3764359080

Enbook ID

01716362

Editura

Birkhauser Verlag AG

Greutate

660

Dimensiuni

155 x 235 x 20

Descriere completă

The purpose in writing this expository monograph has been three-fold. First, the author set out to present the solution of a problem posed by Wolfgang Krull in 1932. He asked whether what is now called the "Krull-Schmidt Theorem" holds for artinian modules. A negative answer was published only in 1995 by Facchini, Herbera, Levy and Vámos. Second, the author presents the answer to a question posed by Warfield in 1975, namely, whether the Krull-Schmidt-Theorem holds for serial modules. Facchini published a negative answer in 1996. The solution to the Warfield problem shows an interesting behavior; in fact, it is a phenomena so rare in the history of Krull-Schmidt type theorems that its presentation to a wider mathematical audience provides the third incentive for this monograph. Briefly, the Krull-Schmidt-Theorem holds for some, not all, classes of modules. When it does hold, any two indecomposable decompositions are uniquely determined up to one permutation. For serial modules the theorem does not hold, but any two indecomposable decompositions are uniquely determined up to two permutations. Apart from these issues, the book addresses various topics in module theory and ring theory, some now considered classical (such as Goldie dimension, semiperfect rings, Krull dimension, rings of quotients, and their applications) and others more specialized (such as dual Goldie dimension, semilocal endomorphism rings, serial rings and modules, exchange property, -pure-injective modules). Open problems conclude the work.

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Module Theory

Endomorphism rings and direct sum decompositions in some classes of modules

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