Group Extensions, Representations, and the Schur Multiplicator / Edition 1

Group Extensions, Representations, and the Schur Multiplicator / Edition 1

by F. R. Beyl, J. Tappe
     
 

ISBN-10: 354011954X

ISBN-13: 9783540119548

Pub. Date: 12/15/1982

Publisher: Springer Berlin Heidelberg

This series reports on new developments in mathematical research and teaching - quickly, informally and at a high level. The type of material considered for publication includes

1. Research monographs

2. Lectures on a new field or presentations of a new angle in a classical field

3. Summer schools and intensive courses on topics of current research.

Texts

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Overview

This series reports on new developments in mathematical research and teaching - quickly, informally and at a high level. The type of material considered for publication includes

1. Research monographs

2. Lectures on a new field or presentations of a new angle in a classical field

3. Summer schools and intensive courses on topics of current research.

Texts that are out of print but still in demand may also be considered.

The timeliness of a manuscript is sometimes more important than its form, which may in such cases be preliminary or tentative.

Product Details

ISBN-13:
9783540119548
Publisher:
Springer Berlin Heidelberg
Publication date:
12/15/1982
Series:
Lecture Notes in Mathematics Series, #958
Edition description:
1982
Pages:
278
Product dimensions:
6.10(w) x 9.25(h) x 0.03(d)

Table of Contents

Introduction 1

Chapter I Group Extensions with Abelian Kernel

1 The Calculus of Induced Extensions 5

2 The Exact Sequence for Opext 19

3 The Schur Multiplicator and the Universal Coefficient Theorem 28

4 The Ganea Map of Central Extensions 40

5 Compatibility with Other Approaches 47

6 Corestriction (Transfer) 58

Chapter II Schur's Theory of Projective Representations

1 Projective Representations 67

2 The Problem of Lifting Homomorphisms 77

3 Representation Groups 91

4 Representation Groups of Free and Direct Products 101

5 The Covering Theory of Perfect Groups 113

Chapter III Isoclinism

1 Isoclinic Groups and Central Extensions 123

2 Isoclinism and the Schur Multiplicator 137

3 The Isomorphism Classes of Isoclinic Central Extensions and the Hall Formulae 144

4 On Presentations of Isoclinic Groups 155

5 Representations of Isoclinic Groups 169

Chapter IV Other Group-Theoretic Applications of the Schur Multiplicator

1 Deficiency of Finitely Presented Groups 179

2 Metacyclic Groups 193

3 The Precise Center of an Extension Group and Capable Groups 204

4 Examples of the Computation of Z*(G) 213

5 Preliminaries on Group Varieties 227

6 Central Extensions and Varieties 233

7 Schur-Baer Multiplicators and Isologism 244

Bibliography 261

Index of Special Symbols 271

Subject Index 274

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