幺半群理論的同調(diào)方法

內(nèi)容概要

This book offers a comprehensive survey of the area of monoids. It includes injective and weakly injective S-acts, the concept of projective S-acts, some fundamental and interesting results concerning strong flatness, condition(P) and flatness of S-acts, some results on homological classification of monoids, the study of sheaves for classes of monoids and S-acts, analogous to the sheaves for classes of rings and modules. This volume will be of interest to researchers, graduate students and scientists of mathematics.

書(shū)籍目錄

PrefaceChapter 1  Fundamental Concepts  1.1  Relations and Lattices  1.2  Categories and Functors  1.3  Basic Concepts in Semigroups  1.4  S-acts and S-homomorphisms  1.5  Prime and Semiprime S-acts over Monoids with Zero Chapter 2  Injective and Weakly Injective S-Acts and Related Concepts  2.1  Injective S-acts  2.2  Weakly Injective S-acts  2.3  Completely Right Injective Monoids  2.4  Quasi-injective S-acts and Completely Quasi-injective Monoids Chapter 3  Relatively Injective S-acts and Related Concepts  3.1  P-injective and Divisible S-acts  3.2  Characterization of Monoids by P-injective S-acts  3.3  Weakly Regular Monoids and Normal S-acts  3.4  Hereditary and Semihereditary Monoids  3.5  Hereditary and Cohereditary S-acts  3.6  Completely Right FSF-injective MonoidsChapter 4  Projective S-Acts  4.1  Projective S-acts  4.2  Completely Right Projective Monoids  4.3  Quasi-projective S-acts  4.4  (x，y)-projective S-acts  4.5  Products of Projective S-acts  4.6  Projective Acts over Factorisable SemigroupsChapter 5  Flat S-Acts  5.1  The Functor   5.2  Flatness and Condition (P)  5 3  Strongly Flat S-actsChapter 6  Homological Classification of Monoids by Flatness  6.1  Strong Flatness of Condition (P) Acts  6.2  Condition (P) Property of Flat Acts  6.3  Strong Flatness of Flat Acts  6.4  Right Perfect MonoidsChapter 7  Some Topics Relative to Flatness  7.1  von Neumann Regular Monoids  7.2  Regularity and Flatness of Acts  7.3  Relative Flatness and Strongly Faithful Acts  7.4  Purity of Acts  7.5  Flatness in SPOSChapter 8  Sheaves for Classes of Monoids  8.1  A Historical Introduction of Sheaf Theory in Algebra  8.2  Sheaves of von Neumann Regular Monoids with Zero  8.3  Pure Ideals of a Monoid with Zero  8.4  Pure Spectrum of a Monoid with Zero  8.5  S-acts  8.6  First Representation Theorem  8.7  Second Representation TheoremBibliographyIndex

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