Información General

• Autores: Eric Jespers , Jan Okninski
• Editores: Dordrecht (The Netherlands)" : Springer, 2007
• Año de publicación: 2007
• País: Países Bajos
• Idioma: inglés
• ISBN: 978-1-4020-5809-7, 978-1-4020-5810-3
• Texto completo no disponible (Saber más ...)

Resumen

• Within the last decade, semigroup theoretical methods have occurred naturally in many aspects of ring theory, algebraic combinatorics, representation theory and their applications. In particular, motivated by noncommutative geometry and the theory of quantum groups, there is a growing interest in the class of semigroup algebras and their deformations.

  This work presents a comprehensive treatment of the main results and methods of the theory of Noetherian semigroup algebras. These general results are then applied and illustrated in the context of important classes of algebras that arise in a variety of areas and have been recently intensively studied. Several concrete constructions are described in full detail, in particular intriguing classes of quadratic algebras and algebras related to group rings of polycyclic-by-finite groups. These give new classes of Noetherian algebras of small Gelfand-Kirillov dimension. The focus is on the interplay between their combinatorics and the algebraic structure. This yields a rich resource of examples that are of interest not only for the noncommutative ring theorists, but also for researchers in semigroup theory and certain aspects of group and group ring theory. Mathematical physicists will find this work of interest owing to the attention given to applications to the Yang-Baxter equation.

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Índice

• 1. Introduction.
  2. Prerequisites on semigroup theory. 2.1 Semigroups. 2.2. Uniform semigroups. 2.3 Full linear semigroup. 2.4 Structure of linear semigroups. 2.5 Closure. 2.6 Semigroups over a field.
  3. Prerequisites on ring theory. 3.1 Noetherian rings and rings satisfying a polynomial identity. 3.2 Prime ideals. 3.3 Group algebras of polycyclic-by-finite groups. 3.4 Graded rings. 3.5 Gelfand-Kirillov dimension. 3.6 Maximal orders. 3.7 Principal ideal rings.
  4. Algebras of submonoids of polycylic-by-finite groups. 4.1 Ascending chain condition. 4.2 The unit group. 4.3 Almost nilpotent case. 4.4 Structure theorem. 4.5 Prime ideals of K[S]. 4.6 Comments and problems.
  5. General Noetherian semigroup algebras. 5.1 Finite generation of the monoid. 5.2 Necessary conditions. 5.3 Monomial semigroups and sufficient conditions. 5.4 Gelfand-Kirillov dimension. 5.5 Comments and problems.
  6. Principal ideal rings. 6.1 Group algebras. 6.2 Matrix embedding. 6.3 Finite dimensional case. 6.4 The general case. 6.5 Comments and problems.
  7. Maximal orders and Noetherian semigroup algebras. 7.1 Maximal orders and monoids. 7.2 Algebras of submonoids of abelian-by-finite groups. 7.3 Comments and problems.
  8. Monoids of I-type. 8.1 A characterization. 8.2 Structure of monoids of I-type. 8.3 Binomial monoids are of I-type. 8.4 Decomposable monoids of I-type. 8.5 Algebras of monoids of I-type. 8.6 Comments and problems.
  9. Monoids of skew type. 9.1 Definition. 9.2 Monoids of skew type and the cyclic condition. 9.3 Non-degenerate monoids of skew type. 9.4 Algebras of non-degenerate monoids of skew type. 9.5 The cancellative congruence and the prime radical. 9.6 Comments and problems.
  10. Examples. 10.1 Monoids of skew type and the Gelfand-Kirillov dimension. 10.2 Four generated monoids of skew type. 10.3 Examples of Gelfand-Kirillov dimension 2. 10.4 Non-degenerate monoids of skew type of Gelfand-Kirillov dimension one. 10.5 Examples of maximal orders. 10.6 Comments.
  Bibliography. Index. Notation.