Cover image for The Structure of Compact Groups : A Primer for Students - A Handbook for the Expert.
The Structure of Compact Groups : A Primer for Students - A Handbook for the Expert.
Title:
The Structure of Compact Groups : A Primer for Students - A Handbook for the Expert.
Author:
Hofmann, Karl H.
ISBN:
9783110199772
Personal Author:
Edition:
2nd ed.
Physical Description:
1 online resource (876 pages)
Series:
De Gruyter Studies in Mathematics ; v.25

De Gruyter Studies in Mathematics
Contents:
Chapter 1 -- Definitions and Elementary Examples -- Actions, Subgroups, Quotient Spaces -- Products of Compact Groups -- Applications to Abelian Groups -- Projective Limits -- Totally Disconnected Compact Groups -- Some Duality Theory -- Postscript -- References for this Chapter-Additional Reading -- Chapter 2 -- Some Basic Representation Theory for Compact Groups -- The Haar Integral -- Consequences of Haar Measure -- The Main Theorem on Hilbert Modules for Compact Groups -- Postscript -- References for this Chapter-Additional Reading -- Chapter 3 -- Part 1: The Classical Theorem of Peter and Weyl -- An Excursion into Linear Algebra -- The G-Modules -- The Fine Structure of R( -- Part 2: The General Theory of G-Modules -- Vector Valued Integration -- The First Application: The Averaging Operator -- Compact Groups Acting on Convex Cones -- More Module Actions, Convolutions -- Complexification of Real Representations -- Postscript -- References for this Chapter-Additional Reading -- Chapter 4 -- Part 1: Characters of Finite Dimensional Representations -- Part 2: The Structure Theorem of -- Cyclic Modules -- Postscript -- References for this Chapter-Additional Reading -- Chapter 5 -- Preliminaries -- The Exponential Function and the Logarithm -- Differentiating the Exponential Function in a Banach Algebra -- Local Groups for the Campbell-Hausdorff Multiplication -- Subgroups of A− -- and Linear Lie Groups -- Analytic Groups -- The Intrinsic Exponential Function of a Linear Lie Group -- The Adjoint Representation of a Linear Lie Group -- Subalgebras, Ideals, Lie Subgroups, Normal Lie Subgroups -- Normalizers, Centralizers, Centers -- The Commutator Subgroup -- Forced Continuity of Morphisms between Lie Groups -- Quotients of Linear Lie Groups -- The Topological Splitting Theorem for Normal Vector Subgroups -- Postscript.

References for this Chapter-Additional Reading -- Chapter 6 -- Compact Lie algebras -- The Commutator Subgroup of a Compact Lie Group -- The Structure Theorem for Compact Lie Groups -- Maximal Tori -- The Second Structure Theorem for Connected Compact Lie Groups -- Compact Abelian Lie Groups and Their Linear Actions -- Action of a Maximal Torus on the Lie Algebra -- The Weyl Group Revisited -- The Commutator Subgroup of Connected Compact Lie Groups -- On the Automorphism Group of a Compact Lie Group -- Covering Groups of Disconnected Compact Lie Groups -- Auerbach's Generation Theorem -- The Topology of Connected Compact Lie Groups -- Postscript -- References for this Chapter-Additional Reading -- Chapter 7 -- The Compact Open Topology and Hom-Groups -- Local Compactness and Duality of Abelian Topological Groups -- Basic Functorial Aspects of Duality -- The Annihilator Mechanism -- Character Groups of Topological Vector Spaces -- The Exponential Function -- Weil's Lemma and Compactly Generated Abelian Groups -- Reducing Locally Compact Groups to Compact Abelian Groups -- The Duality Theorem -- The Identity Component -- The Weight of Locally Compact Abelian Groups -- Postscript -- References for this Chapter-Additional Reading -- Chapter 8 -- Part 1: Aspects of the Algebraic Structurer Divisibility, Torsion, Connectivity -- Compact Abelian Groups as Factor Groups -- Part 2: Aspects of the Point Set Topological Structure Topological Dimension of Compact Abelian Groups -- Arc Connectivity -- Local Connectivity -- Compact Metric Abelian Groups -- Part 3: Aspects of Algebraic Topology-Homotopy Free Compact Abelian Groups -- Homotopy of Compact Abelian Groups -- Exponential Function and Homotopy -- The Fine Structure of Free Compact Abelian Groups -- Part 4: Aspects of Homological Algebra Injective, Projective, and Free Compact Abelian Groups.

Part 5: Aspects of Algebraic Topology-Cohomology Cohomology of Compact Abelian Groups -- Part 6: Aspects of Set Theory Arc Components and Borel Sets -- Postscript -- References for this Chapter-Additional Reading -- Chapter 9 -- Part 1: The Fundamental Structure Theorems of Compact Groups Approximating Compact Groups by Compact Lie Groups -- The Closedness of Commutator Subgroups -- Semisimple Compact Connected Groups -- The Levi-Mal'cev Structure Theorem for Compact Groups -- Maximal Connected Abelian Subgroups -- The Splitting Structure Theorem -- Supplementing the Identity Component -- Part 2: The Structure Theorems for the Exponential Function The Exponential Function of Compact Groups -- The Dimension of Compact Groups -- Locally Euclidean Compact Groups Are Compact Lie Groups -- Part 3: The Connectivity Structure of Compact Groups Arc Connectivity -- Local Connectivity -- Compact Groups and Indecomposable Continua -- Part 4: Some Homological Algebra for Compact Groups The Projective Cover of Connected Compact Groups -- Part 5: The Automorphism Group of Compact Groups -- The Iwasawa Theory of Automorphism Groups -- Simple Compact Groups and the Countable Layer Theorem -- Postscript -- References for this Chapter-Additional Reading -- Chapter 10 -- A Preparation Involving Compact Semigroups -- Orbits, Orbit Space, and Isotropy -- Equivariance and Cross Sections -- The Triviality Theorem -- Quotient Actions, Totally Disconnected G-Spaces -- Compact Lie Groups Acting on Locally Compact Spaces -- Triviality Theorems for Compact Group Actions -- Split Morphisms -- Postscript -- References for this Chapter-Additional Reading -- Chapter 11 -- The Category Theoretical Background -- Splitting the Identity Component -- The Center of a Free Compact Group -- The Commutator Subgroup of a Free Compact Group -- Freeness Versus Projectivity -- Postscript.

References for this Chapter-Additional Reading -- Chapter 12 -- Suitable sets -- Generating Degree and Density -- The Cardinal Invariants of Connected Compact Groups -- Cardinal Invariants in the Absence of Connectivity -- On the Location of Special Generating Sets -- Postscript -- References for this Chapter-Additional Reading -- Appendix 1 -- Examples -- Free Abelian Groups -- Projective Groups -- Torsion Subgroups -- Pure Subgroups -- Free Quotients -- Divisibility -- Some Homological Algebra -- Exact Sequences -- Whitehead's Problem -- Postscript -- References for this Chapter-Additional Reading -- Appendix 2 -- Covering Spaces and Simple Connectivity -- The Group of Covering Transformations -- Universal Covering Groups -- Groups Generated by Local Groups -- Postscript -- References for this Chapter-Additional Reading -- Appendix 3 -- Categories, Morphisms -- Pointed Categories -- Types of Morphisms -- Functors -- Natural Transformations -- Equivalence of Categories -- Limits -- The Continuity of Adjoints -- The Left Adjoint Existence Theorem -- Commutative Monoidal Categories and its Monoid Objects -- Part 1: The Quintessential Diagram Chase -- Part 2: Connected Graded Commutative Hopf Algebras -- Part 3: Duality of Graded Hopf Algebras -- Part 4: An Application to Compact Monoids -- Postscript -- References for this Chapter-Additional Reading -- Appendix 4 -- The Arc Component Topology -- The Weight of a Topological Space -- Metrizability of Topological Groups -- Duality of Vector Spaces -- Subgroups of Topological Groups -- Wallace's Lemma -- Cantor Cubes and Dyadic spaces -- Postscript -- References for this Chapter-Additional Reading.
Abstract:
Dealing with the subject matter of compact groups that is frequently cited in fields like algebra, topology, functional analysis, and theoretical physics, this book has been conceived with the dual purpose of providing a text book for upper level graduate courses or seminars, and of serving as a source book for research specialists who need to apply the structure and representation theory of compact groups. The first edition of 1998 was well received by reviewers and has been frequently quoted in the areas of instruction and research. For the present new edition the text has been improved in various sections. New material has been added in order to reflect ongoing research.
Local Note:
Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, 2017. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries.
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