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OverviewUltrafilters and ultraproducts provide a useful generalization of the ordinary limit processes which have applications to many areas of mathematics. Typically, this topic is presented to students in specialized courses such as logic, functional analysis, or geometric group theory. In this book, the basic facts about ultrafilters and ultraproducts are presented to readers with no prior knowledge of the subject and then these techniques are applied to a wide variety of topics. The first part of the book deals solely with ultrafilters and presents applications to voting theory, combinatorics, and topology, while also dealing also with foundational issues. The second part presents the classical ultraproduct construction and provides applications to algebra, number theory, and nonstandard analysis. The third part discusses a metric generalization of the ultraproduct construction and gives example applications to geometric group theory and functional analysis. The final section returns to more advanced topics of a more foundational nature. The book should be of interest to undergraduates, graduate students, and researchers from all areas of mathematics interested in learning how ultrafilters and ultraproducts can be applied to their specialty. Full Product DetailsAuthor: Isaac GoldbringPublisher: American Mathematical Society Imprint: American Mathematical Society Weight: 0.742kg ISBN: 9781470469610ISBN 10: 1470469618 Pages: 408 Publication Date: 30 August 2022 Audience: Professional and scholarly , Professional & Vocational Format: Paperback Publisher's Status: Active Availability: In Print  This item will be ordered in for you from one of our suppliers. Upon receipt, we will promptly dispatch it out to you. For in store availability, please contact us. Table of ContentsUltrafilters and their applications: Ultrafilter basics Arrow's theorem on fair voting Ultrafilters in topology Ramsey theory and combinatorial number theory Foundational concerns Classical ultraproducts: Classical ultraproducts Applicationis to geometry, commutative algebra, and number theory Ultraproducts and saturation Nonstandard analysis Limit groups Metric ultraproducts and their applications: Metric ultraproducts Asymptotic cones and Gromov's theorem Sofic groups Functional analysis Advanced topics: Does an ultrapower depend on the ultrafilter? The Keisler-Shelah theorem Large cardinals Appendices: Logic Set theory Category theory Hints and solutions to selected exercises Bibliography IndexReviewsAuthor InformationIsaac Goldbring, University of California, Irvine, CA. Tab Content 6Author Website:Countries AvailableAll regions |
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