9780792370673: Commutative Semigroups: 2

Sinossi

The first book on commutative semigroups was Redei's The theory of .finitely generated commutative semigroups, published in Budapest in 1956. Subsequent years have brought much progress. By 1975 the structure of finite commutative semigroups was fairly well understood. Recent results have perfected this understanding and extended it to finitely generated semigroups. Today's coherent and powerful structure theory is the central subject of the present book. 1. Commutative semigroups are more important than is suggested by the stan­ dard examples ofsemigroups, which consist ofvarious kinds oftransformations or arise from finite automata, and are usually quite noncommutative. Commutative of factoriza­ semigroups provide a natural setting and a useful tool for the study tion in rings. Additive subsemigroups of N and Nn have close ties to algebraic geometry. Commutative rings are constructed from commutative semigroups as semigroup algebras or power series rings. These areas are all subjects of active research and together account for about half of all current papers on commutative semi groups. Commutative results also invite generalization to larger classes of semigroups. Archimedean decompositions, a comparatively small part oftoday's arsenal, have been generalized extensively, as shown for instance in the upcoming books by Nagy [2001] and Ciric [2002].

Le informazioni nella sezione "Riassunto" possono far riferimento a edizioni diverse di questo titolo.

Contenuti

Preface. General structure theory: I. Elementary properties. II. Cancellative semigroups. III. Semilattice decompositions. IV. Subdirect decompositions. V. Group coextensions. VI. Finitely generated semigroups. VII. Subcomplete semigroups. VIII. Other results. Congruences: IX. Nilsemigroups. X. Group-free semigroups. XI. Subcomplete semigroups. Cohomology: XII. Commutative semigroup cohomology. XIII. The overpath method. XIV. Semigroups with zero cohomology. References. Author. Index. Notation. Index.

Product Description

Book by Grillet PA

Le informazioni nella sezione "Su questo libro" possono far riferimento a edizioni diverse di questo titolo.

Altre edizioni note dello stesso titolo

9781441948571: Commutative Semigroups: 2

Edizione in evidenza

ISBN 10:  1441948570 ISBN 13:  9781441948571
Casa editrice: Springer, 2010
Brossura