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Measure and Category - A Survey of the Analogies between Topological and Measure Spaces (Hardcover, 2nd ed. 1980. 4th printing... Measure and Category - A Survey of the Analogies between Topological and Measure Spaces (Hardcover, 2nd ed. 1980. 4th printing 1996)
John C. Oxtoby
R2,521 Discovery Miles 25 210 Ships in 12 - 17 working days

In this edition, a set of Supplementary Notes and Remarks has been added at the end, grouped according to chapter. Some of these call attention to subsequent developments, others add further explanation or additional remarks. Most of the remarks are accompanied by a briefly indicated proof, which is sometimes different from the one given in the reference cited. The list of references has been expanded to include many recent contributions, but it is still not intended to be exhaustive. John C. Oxtoby Bryn Mawr, April 1980 Preface to the First Edition This book has two main themes: the Baire category theorem as a method for proving existence, and the "duality" between measure and category. The category method is illustrated by a variety of typical applications, and the analogy between measure and category is explored in all of its ramifications. To this end, the elements of metric topology are reviewed and the principal properties of Lebesgue measure are derived. It turns out that Lebesgue integration is not essential for present purposes-the Riemann integral is sufficient. Concepts of general measure theory and topology are introduced, but not just for the sake of generality. Needless to say, the term "category" refers always to Baire category; it has nothing to do with the term as it is used in homological algebra.

Measure and Category - A Survey of the Analogies between Topological and Measure Spaces (Paperback, 2nd ed. 1980. Softcover... Measure and Category - A Survey of the Analogies between Topological and Measure Spaces (Paperback, 2nd ed. 1980. Softcover reprint of the original 2nd ed. 1980)
John C. Oxtoby
R1,565 R1,403 Discovery Miles 14 030 Save R162 (10%) Ships in 12 - 17 working days

In this edition, a set of Supplementary Notes and Remarks has been added at the end, grouped according to chapter. Some of these call attention to subsequent developments, others add further explanation or additional remarks. Most of the remarks are accompanied by a briefly indicated proof, which is sometimes different from the one given in the reference cited. The list of references has been expanded to include many recent contributions, but it is still not intended to be exhaustive. John C. Oxtoby Bryn Mawr, April 1980 Preface to the First Edition This book has two main themes: the Baire category theorem as a method for proving existence, and the "duality" between measure and category. The category method is illustrated by a variety of typical applications, and the analogy between measure and category is explored in all of its ramifications. To this end, the elements of metric topology are reviewed and the principal properties of Lebesgue measure are derived. It turns out that Lebesgue integration is not essential for present purposes-the Riemann integral is sufficient. Concepts of general measure theory and topology are introduced, but not just for the sake of generality. Needless to say, the term "category" refers always to Baire category; it has nothing to do with the term as it is used in homological algebra.

John Von Neumann, 1903-1957 - Bulletin of the American Mathematical Society, V64, No. 3, Part 2, May, 1958 (Paperback): John C.... John Von Neumann, 1903-1957 - Bulletin of the American Mathematical Society, V64, No. 3, Part 2, May, 1958 (Paperback)
John C. Oxtoby, Billy J. Pettis, G B Price
R650 Discovery Miles 6 500 Ships in 10 - 15 working days

Whole Number 654. Contributors Include S. Ulam, Garrett Birkoff, F. J. Murray And Others.

Mass und Kategorie (German, Paperback): John C. Oxtoby Mass und Kategorie (German, Paperback)
John C. Oxtoby; Translated by K. Schurger
R1,303 Discovery Miles 13 030 Ships in 10 - 15 working days

Dieses Buch behandelt hauptsachlich zwei Themenkreise: Der Bairesche Kategorie-Satz als Hilfsmittel fur Existenzbeweise sowie Die "Dualitat" zwischen Mass und Kategorie. Die Kategorie-Methode wird durch viele typische Anwendungen erlautert; die Analogie, die zwischen Mass und Kategorie besteht, wird nach den verschiedensten Richtungen hin genauer untersucht. Hierzu findet der Leser eine kurze Einfuhrung in die Grundlagen der metrischen Topologie; ausserdem werden grundlegende Eigenschaften des Lebesgue schen Masses hergeleitet. Es zeigt sich, dass die Lebesguesche Integrationstheorie fur unsere Zwecke nicht erforderlich ist, sondern dass das Riemannsche Integral ausreicht. Weiter werden einige Begriffe aus der allgemeinen Masstheorie und Topologie eingefuhrt; dies geschieht jedoch nicht nur der grosseren Allgemeinheit wegen. Es erubrigt sich fast zu erwahnen, dass sich die Bezeichnung "Kategorie" stets auf "Bairesche Kategorie" be zieht; sie hat nichts zu tun mit dem in der homologischen Algebra verwendeten Begriff der Kategorie. Beim Leser werden lediglich grundlegende Kenntnisse aus der Analysis und eine gewisse Vertrautheit mit der Mengenlehre vorausgesetzt. Fur die hier untersuchten Probleme bietet sich in naturlicher Weise die mengentheoretische Formulierung an. Das vorlie gende Buch ist als Einfuhrung in dieses Gebiet der Analysis gedacht. Man konnte es als Erganzung zur ublichen Grundvorlesung uber reelle Analysis, als Grundlage fur ein Se minar oder auch zum selbstandigen Studium verwenden. Bei diesem Buch handelt es sich vorwiegend um eine zusammenfassende Darstellung; jedoch finden sich in ihm auch einige Verfeinerungen bekannter Resultate, namentlich Satz 15.6 und Aussage 20.4. Das Literaturverzeichnis erhebt keinen Anspruch auf Vollstandigkeit. Haufig werden Werke zitiert, die weitere Literaturangaben enthalten."

John Von Neumann, 1903-1957 - Bulletin of the American Mathematical Society, V64, No. 3, Part 2, May, 1958 (Hardcover): John C.... John Von Neumann, 1903-1957 - Bulletin of the American Mathematical Society, V64, No. 3, Part 2, May, 1958 (Hardcover)
John C. Oxtoby, Billy J. Pettis, G B Price
R939 Discovery Miles 9 390 Ships in 10 - 15 working days

Whole Number 654. Contributors Include S. Ulam, Garrett Birkoff, F. J. Murray And Others.

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