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Full Description
This is a systematic exposition of the basic part of the theory of mea sure and integration. The book is intended to be a usable text for students with no previous knowledge of measure theory or Lebesgue integration, but it is also intended to include the results most com monly used in functional analysis. Our two intentions are some what conflicting, and we have attempted a resolution as follows. The main body of the text requires only a first course in analysis as background. It is a study of abstract measures and integrals, and comprises a reasonably complete account of Borel measures and in tegration for R Each chapter is generally followed by one or more supplements. These, comprising over a third of the book, require some what more mathematical background and maturity than the body of the text (in particular, some knowledge of general topology is assumed) and the presentation is a little more brisk and informal. The material presented includes the theory of Borel measures and integration for ‾n, the general theory of integration for locally compact Hausdorff spaces, and the first dozen results about invariant measures for groups. Most of the results expounded here are conventional in general character, if not in detail, but the methods are less so. The following brief overview may clarify this assertion.
Contents
0: Preliminaries.- Sets.- Functions.- Countability.- Orderings and Lattices.- Convergence in ?*.- Unordered Summability.- Hausdorff Maximal Principle.- 1: Pre-Measures.- Supplement: Contents.- Supplement: G Invariant Contents.- Supplement: Carathéodory Pre-Measures.- 2: Pre-Measure to Pre-Integral.- Supplement: Volume ?n;The Iterated Integral.- Supplement: Pre-Integrals on Cc(X) and C0(X).- 3: Pre-Integral to Integral.- 4: Integral to Measure.- Supplement: Lebesgue Measure ?n for ?n.- Supplement: Measures on B?(X).- Supplement: G Invariant Measures.- 5: Measurability and ?-Simplicity.- Supplement: Standard Borel Spaces.- 6: The Integral I? on L1(?).- Supplement: Borel Measures and Positive Functionals.- 7: Integrals* and Products.- Supplement: Borel Product Measure.- 8: Measures* and Mappings.- Supplement: Stieltjes Integration.- Supplement: The Image of ?p Under a Smooth Map 100 Supplement: Maps of Borel Measures*; Convolution.- 9: Signed Measures and Indefinite Integrals.- Supplement: Decomposable Measures.- Supplement: Haar Measure.- 10: Banach Spaces.- Supplement: The Spaces C0(X)* and L1(?)*.- Supplement: Complex Integral and Complex Measure.- Supplement: The Bochner Integral.- Selected References.
