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Unitary Representations of Groups, Duals, and Characters
 
Bachir Bekka IRMAR, Université de Rennes 1, Rennes, France
Pierre de la Harpe Université de Genève, Genève, Switzerland
Unitary Representations of Groups, Duals,and Characters
Softcover ISBN:  978-1-4704-5627-6
Product Code:  SURV/250
List Price: $140.00
MAA Member Price: $126.00
AMS Member Price: $112.00
eBook ISBN:  978-1-4704-6287-1
Product Code:  SURV/250.E
List Price: $140.00
MAA Member Price: $126.00
AMS Member Price: $112.00
Softcover ISBN:  978-1-4704-5627-6
eBook: ISBN:  978-1-4704-6287-1
Product Code:  SURV/250.B
List Price: $280.00 $210.00
MAA Member Price: $252.00 $189.00
AMS Member Price: $224.00 $168.00
Unitary Representations of Groups, Duals,and Characters
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Unitary Representations of Groups, Duals, and Characters
Bachir Bekka IRMAR, Université de Rennes 1, Rennes, France
Pierre de la Harpe Université de Genève, Genève, Switzerland
Softcover ISBN:  978-1-4704-5627-6
Product Code:  SURV/250
List Price: $140.00
MAA Member Price: $126.00
AMS Member Price: $112.00
eBook ISBN:  978-1-4704-6287-1
Product Code:  SURV/250.E
List Price: $140.00
MAA Member Price: $126.00
AMS Member Price: $112.00
Softcover ISBN:  978-1-4704-5627-6
eBook ISBN:  978-1-4704-6287-1
Product Code:  SURV/250.B
List Price: $280.00 $210.00
MAA Member Price: $252.00 $189.00
AMS Member Price: $224.00 $168.00
  • Book Details
     
     
    Mathematical Surveys and Monographs
    Volume: 2502020; 484 pp
    MSC: Primary 22; 46

    Unitary representations of groups play an important role in many subjects, including number theory, geometry, probability theory, partial differential equations, and quantum mechanics. This monograph focuses on dual spaces associated to a group, which are spaces of building blocks of general unitary representations.

    Special attention is paid to discrete groups for which the unitary dual, the most common dual space, has proven to be not useful in general and for which other duals spaces have to be considered, such as the primitive dual, the normal quasi-dual, or spaces of characters. The book offers a detailed exposition of these alternative dual spaces and covers the basic facts about unitary representations and operator algebras needed for their study. Complete and elementary proofs are provided for most of the fundamental results that up to now have been accessible only in original papers and appear here for the first time in textbook form.

    A special feature of this monograph is that the theory is systematically illustrated by a family of examples of discrete groups for which the various dual spaces are discussed in great detail: infinite dihedral group, Heisenberg groups, affine groups of fields, solvable Baumslag-Solitar group, lamplighter group, and general and special linear groups.

    The book will appeal to graduate students who wish to learn the basics facts of an important topic and provides a useful resource for researchers from a variety of areas. The only prerequisites are a basic background in group theory, measure theory, and operator algebras.

    Readership

    Graduate students and researchers interested in discrete and topological group and representation theory.

  • Table of Contents
     
     
    • Chapters
    • Introduction
    • Unitary dual and primitive dual
    • Representations of locally compact abelian groups
    • Examples of irreducible representations
    • Finite-dimensional irreducible representations
    • Describing all irreducible representations of some semi-direct products
    • Types for representations, quasi-duals, groups of type I
    • Non type I groups
    • Representations of C*-algebras of LC groups, the Glimm Theorem
    • Examples of primitive duals
    • Normal qluasi-dual and characters
    • Finite characters and Thoma’s dual
    • Examples of Thoma’s duals
    • The group measure space construction
    • Construction of factor representations for some semi-direct products
    • Separating families of finite type representations
    • Appendix
  • Reviews
     
     
    • This is an exceptional book that is likely to be enormously useful both to researchers in the field and others who simply wish to learn about unitary representations and their duals.

      Robert S. Doran, MR Reviews
  • Requests
     
     
    Review Copy – for publishers of book reviews
    Permission – for use of book, eBook, or Journal content
    Accessibility – to request an alternate format of an AMS title
Volume: 2502020; 484 pp
MSC: Primary 22; 46

Unitary representations of groups play an important role in many subjects, including number theory, geometry, probability theory, partial differential equations, and quantum mechanics. This monograph focuses on dual spaces associated to a group, which are spaces of building blocks of general unitary representations.

Special attention is paid to discrete groups for which the unitary dual, the most common dual space, has proven to be not useful in general and for which other duals spaces have to be considered, such as the primitive dual, the normal quasi-dual, or spaces of characters. The book offers a detailed exposition of these alternative dual spaces and covers the basic facts about unitary representations and operator algebras needed for their study. Complete and elementary proofs are provided for most of the fundamental results that up to now have been accessible only in original papers and appear here for the first time in textbook form.

A special feature of this monograph is that the theory is systematically illustrated by a family of examples of discrete groups for which the various dual spaces are discussed in great detail: infinite dihedral group, Heisenberg groups, affine groups of fields, solvable Baumslag-Solitar group, lamplighter group, and general and special linear groups.

The book will appeal to graduate students who wish to learn the basics facts of an important topic and provides a useful resource for researchers from a variety of areas. The only prerequisites are a basic background in group theory, measure theory, and operator algebras.

Readership

Graduate students and researchers interested in discrete and topological group and representation theory.

  • Chapters
  • Introduction
  • Unitary dual and primitive dual
  • Representations of locally compact abelian groups
  • Examples of irreducible representations
  • Finite-dimensional irreducible representations
  • Describing all irreducible representations of some semi-direct products
  • Types for representations, quasi-duals, groups of type I
  • Non type I groups
  • Representations of C*-algebras of LC groups, the Glimm Theorem
  • Examples of primitive duals
  • Normal qluasi-dual and characters
  • Finite characters and Thoma’s dual
  • Examples of Thoma’s duals
  • The group measure space construction
  • Construction of factor representations for some semi-direct products
  • Separating families of finite type representations
  • Appendix
  • This is an exceptional book that is likely to be enormously useful both to researchers in the field and others who simply wish to learn about unitary representations and their duals.

    Robert S. Doran, MR Reviews
Review Copy – for publishers of book reviews
Permission – for use of book, eBook, or Journal content
Accessibility – to request an alternate format of an AMS title
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