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Ultrafilters and Topologies on Groups (Hardcover) Loot Price: R5,337
Discovery Miles 53 370
Ultrafilters and Topologies on Groups (Hardcover): Yevhen Zelenyuk

Ultrafilters and Topologies on Groups (Hardcover)

Yevhen Zelenyuk

Series: De Gruyter Expositions in Mathematics

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Loot Price R5,337 Discovery Miles 53 370 | Repayment Terms: R500 pm x 12*

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This book presents the relationship between ultrafilters and topologies on groups. It shows how ultrafilters are used in constructing topologies on groups with extremal properties and how topologies on groups serve in deriving algebraic results about ultrafilters. The contents of the book fall naturally into three parts. The first, comprising Chapters 1 through 5, introduces to topological groups and ultrafilters insofar as the semigroup operation on ultrafilters is not required. Constructions of some important topological groups are given. In particular, that of an extremally disconnected topological group based on a Ramsey ultrafilter. Also one shows that every infinite group admits a nondiscrete zero-dimensional topology in which all translations and the inversion are continuous. In the second part, Chapters 6 through 9, the Stone-Cech compactification G of a discrete group G is studied. For this, a special technique based on the concepts of a local left group and a local homomorphism is developed. One proves that if G is a countable torsion free group, then G contains no nontrivial finite groups. Also the ideal structure of G is investigated. In particular, one shows that for every infinite Abelian group G, G contains 22|G| minimal right ideals. In the third part, using the semigroup G, almost maximal topological and left topological groups are constructed and their ultrafilter semigroups are examined. Projectives in the category of finite semigroups are characterized. Also one shows that every infinite Abelian group with finitely many elements of order 2 is absolutely -resolvable, and consequently, can be partitioned into subsets such that every coset modulo infinite subgroup meets each subset of the partition. The book concludes with a list of open problems in the field. Some familiarity with set theory, algebra and topology is presupposed. But in general, the book is almost self-contained. It is aimed at graduate students and researchers working in topological algebra and adjacent areas.

General

Imprint: De Gruyter
Country of origin: Germany
Series: De Gruyter Expositions in Mathematics
Release date: March 2011
First published: 2011
Authors: Yevhen Zelenyuk
Dimensions: 240 x 170 x 15mm (L x W x T)
Format: Hardcover
Pages: 227
ISBN-13: 978-3-11-020422-3
Categories: Books > Science & Mathematics > Mathematics > Algebra > Groups & group theory
Books > Science & Mathematics > Mathematics > Topology > General
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LSN: 3-11-020422-3
Barcode: 9783110204223

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