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Aspects of Topology, 2nd Ed.

by C. Christenson and W. Voxman


Table of Contents

Preface . v

Chapter 0: Preliminaries . 1

  • A. Basic Notation
  • B. Cartesian Products and Relations
  • C. Functions
  • D. The Axiom of Choice and Some of its Variants
  • E. Cardinal Numbers and Ordinal Numbers
  • F. Minkowski's Inequality
  • Chapter 1: The Basic Constructs . 11

  • A. Topological Spaces and Continuity
  • B. Further Examples of Topological Spaces
  • C. Metric Spaces: A Preview
  • D. Building New Spaces from Old Ones
  • E. A Potpourri of Fundamental Concepts
  • F. Continuity
  • G. Homeomorphisms
  • Problems
  • Chapter 2: Connectedness and Compactness . 47

  • A. Connectedness: General Results
  • B. Connectedness: Slightly Deeper Results
  • C. Path Connectedness
  • D. Components
  • E. Locally Connected Spaces
  • F. Simple Chains
  • G. Compactness
  • H. Two Characterizations of Compactness
  • I. Compactness: Local, Countable, and Sequential
  • J. The One Point Compactification
  • Problems
  • Chapter 3: Metric Spaces . 77

  • A. Compactness in a Metric Setting
  • B. Complete Metric Spaces
  • C. Convex and Hausdorff Metrics
  • Problems
  • Chapter 4: Separation Properties . 97

  • A. Normal Spaces
  • B. Uryson's Lemma; Tietze's Extension Theorem
  • C. Further Results Concerning Normal Spaces
  • D. The Separation Axioms
  • Problems
  • Chapter 5: 1-Manifolds and some Plane Theorems . 121

  • A. 1-Manifolds
  • B. On the Contractibility of \sS1
  • C. The Jordan Curve Theorem
  • D. The Schönflies Theorem
  • E. The Annulus Theorem
  • Problems
  • Chapter 6: The Product Topology and Inverse Systems . 151

  • A. The Product Topology Revisited
  • B. Inverse Systems: the Preliminaries
  • C. Compact Metric Spaces are Continuous Images of the Cantor Set
  • D. The Dyadic Solenoid
  • Problems
  • Chapter 7: Functions Spaces, Weak Topologies, and Hilbert Space . 175

  • A. The Point-Open Topology
  • B. The Compact-Open Topology
  • C. The Weak Topology: I
  • D. The Weak Topology: II
  • E. Hilbert Space
  • Problems
  • Chapter 8: Quotient Spaces . 193

  • A. The Quotient Topology
  • B. Identifications
  • C. Identification Maps
  • D. The Strong Topology and k-Spaces
  • E. CW-Complexes
  • F. Upper Semicontinuous Decompositions: An Introduction
  • Problems
  • Chapter 9: Continua . 221

  • A. The Arc
  • B. Peano Continua
  • C. Chainable Continua
  • D. Decomposable and Indecomposable Continua
  • E. The Pseudo-Arc
  • Problems
  • Chapter 10: Paracompactness and Metrizability . 249

  • A. Paracompactness
  • B. Partitions of Unity
  • C. A Sampling of Metrizability Theory
  • D. Moore Spaces
  • E. Completion of Metric Spaces
  • Problems
  • Chapter 11: Nets and Filters . 271

  • A. On the Failings of Sequences
  • B. Nets
  • C. Filters
  • D. Nets vs. Filters
  • Problems
  • Chapter 12: The Algebraization of Topology . 283

  • A. The Fundamental Group (The First Homotopy Group)
  • B. Elementary Properties of the Fundamental Group
  • C. Continuous Functions and Homomorphisms
  • D. Categories and Functors
  • E. The Seifert-van Kampen Theorem
  • F. Direct Limits
  • Problems
  • Chapter 13: Covering Spaces . 317

  • A. The Lifting Theorems
  • B. p1(\sS1,s) = \intr (A Diversion)
  • C. Regular Covering Spaces
  • D. Map Liftings
  • E. Covering Morphism and Translations
  • F. Universal Covering Spaces
  • Problems
  • Chapter 14: Some Elements of Simplicial Theory . 341

  • A. The Polyhedral Category
  • B. Basic Constructions
  • C. Simplicial Approximation Theorems
  • D. Edge Path Groups: How to compute p1(|K|,v0) for any Complex
  • Problems
  • Chapter 15: Further Applications of Homotopy . 375

  • A. The Extension Problem (Revisited)
  • B. The Separation Problem
  • C. Unicoherence
  • D. p1(\sE3,G), for a Polygonal Graph G in \sE3
  • E. Wild Sets Do Exist
  • Problems

  • Chapter 16: 2-Manifolds . 401

  • A. The Triangulation of 2-Manifolds
  • B. The Classification of Compact 2-Manifolds
  • C. A Characterization of \sE2
  • Problems
  • Chapter 17: An Introduction to n-Manifolds . 419

  • A. Some Preliminaries
  • B. n-Annuli
  • C. Cellular Sets
  • D. The Generalized Schönflies Theorem
  • E. Compact n-Manifolds
  • Problems
  • Chapter 18: Dimension Theory . 439

  • A. Little Inductive Dimension
  • B. Big Inductive and Covering Dimension
  • C. Some Final Results
  • Problems
  • Appendix: . 459

  • A. Free Groups
  • B. Group Presentations
  • C. Homomorphisms and Tietze's Theorem
  • D. Direct Limits of Groups
  • Bibliography . 471

    Index . 481


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    File translated from TEX by TTH, version 1.96. On 10 Feb 1999, 11:38.

    Further modified 10 Feb 1999, 2:38