Groupoids Inverse Semigroups And Their Operator Algebras

Author : Alan Paterson
Publisher : Springer Science & Business Media
ISBN 13 : 1461217741
Total Pages : 286 pages
Book Rating : 4.49/5 ( download)

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Download or read book Groupoids, Inverse Semigroups, and their Operator Algebras written by Alan Paterson and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, it has become increasingly clear that there are important connections relating three concepts -- groupoids, inverse semigroups, and operator algebras. There has been a great deal of progress in this area over the last two decades, and this book gives a careful, up-to-date and reasonably extensive account of the subject matter. After an introductory first chapter, the second chapter presents a self-contained account of inverse semigroups, locally compact and r-discrete groupoids, and Lie groupoids. The section on Lie groupoids in chapter 2 contains a detailed discussion of groupoids particularly important in noncommutative geometry, including the holonomy groupoids of a foliated manifold and the tangent groupoid of a manifold. The representation theories of locally compact and r-discrete groupoids are developed in the third chapter, and it is shown that the C*-algebras of r-discrete groupoids are the covariance C*-algebras for inverse semigroup actions on locally compact Hausdorff spaces. A final chapter associates a universal r-discrete groupoid with any inverse semigroup. Six subsequent appendices treat topics related to those covered in the text. The book should appeal to a wide variety of professional mathematicians and graduate students in fields such as operator algebras, analysis on groupoids, semigroup theory, and noncommutative geometry. It will also be of interest to mathematicians interested in tilings and theoretical physicists whose focus is modeling quasicrystals with tilings. An effort has been made to make the book lucid and 'user friendly"; thus it should be accessible to any reader with a basic background in measure theory and functional analysis.

Author : Alan L. T. Paterson
Publisher :
ISBN 13 : 9783764340513
Total Pages : 274 pages
Book Rating : 4.17/5 ( download)

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Download or read book Groupoids, Inverse Semigroups, and Their Operator Algebras written by Alan L. T. Paterson and published by . This book was released on 1999 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Mark V Lawson
Publisher : World Scientific
ISBN 13 : 9814496715
Total Pages : 428 pages
Book Rating : 4.11/5 ( download)

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Download or read book Inverse Semigroups written by Mark V Lawson and published by World Scientific. This book was released on 1998-11-06 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: Symmetry is one of the most important organising principles in the natural sciences. The mathematical theory of symmetry has long been associated with group theory, but it is a basic premise of this book that there are aspects of symmetry which are more faithfully represented by a generalization of groups called inverse semigroups. The theory of inverse semigroups is described from its origins in the foundations of differential geometry through to its most recent applications in combinatorial group theory, and the theory tilings. Contents:Introduction to Inverse SemigroupsExtending Partial SymmetriesThe Natural Partial OrderOrdered GroupoidsExtensions of Inverse SemigroupsFree Inverse SemigroupsE-unitary Inverse SemigroupsEnlargements0-E-unitary Inverse SemigroupsCategory Actions and Inverse Semigroups Readership: Mathematicians, and students of symmetry in the physical sciences. keywords:Semigroup Theory;Inverse Semigroup Theory;Category Theory;Groupoids;Ordered Groupoids;Cateory Actions;Symmetry;Partial Symmetry;Pseudogroups;Topological Groupoids “… this volume represents an outstanding contribution to the field. The resolute graduate student or mature researcher, alike, can find a wealth of directions for future work.” Mathematical Reviews

Author : Dana P. Williams
Publisher : American Mathematical Soc.
ISBN 13 : 1470451336
Total Pages : 398 pages
Book Rating : 4.32/5 ( download)

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Download or read book Tool Kit for Groupoid C∗ -Algebras written by Dana P. Williams and published by American Mathematical Soc.. This book was released on 2019-09-24 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt: The construction of a C∗-algebra from a locally compact groupoid is an important generalization of the group C∗-algebra construction and of the transformation group C∗-algebra construction. Since their introduction in 1980, groupoid C∗-algebras have been intensively studied with diverse applications, including graph algebras, classification theory, variations on the Baum-Connes conjecture, and noncommutative geometry. This book provides a detailed introduction to this vast subject and is suitable for graduate students or any researcher who wants to use groupoid C∗-algebras in their work. The main focus is to equip the reader with modern versions of the basic technical tools used in the subject, which will allow the reader to understand fundamental results and make contributions to various areas in the subject. Thus, in addition to covering the basic properties and construction of groupoid C∗-algebras, the focus is to give a modern treatment of some of the major developments in the subject in recent years, including the Equivalence Theorem and the Disintegration Theorem. Also covered are the complicated subjects of amenability of groupoids and simplicity results. The book is reasonably self-contained and accessible to graduate students with a good background in operator algebras.

Author : Christopher D. Hollings
Publisher : Springer
ISBN 13 : 3319636219
Total Pages : 189 pages
Book Rating : 4.14/5 ( download)

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Download or read book Wagner’s Theory of Generalised Heaps written by Christopher D. Hollings and published by Springer. This book was released on 2017-09-09 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt: The theories of V. V. Wagner (1908-1981) on abstractions of systems of binary relations are presented here within their historical and mathematical contexts. This book contains the first translation from Russian into English of a selection of Wagner’s papers, the ideas of which are connected to present-day mathematical research. Along with a translation of Wagner’s main work in this area, his 1953 paper ‘Theory of generalised heaps and generalised groups,’ the book also includes translations of three short precursor articles that provide additional context for his major work. Researchers and students interested in both algebra (in particular, heaps, semiheaps, generalised heaps, semigroups, and groups) and differential geometry will benefit from the techniques offered by these translations, owing to the natural connections between generalised heaps and generalised groups, and the role played by these concepts in differential geometry. This book gives examples from present-day mathematics where ideas related to Wagner’s have found fruitful applications.

Author : K. P. Shum
Publisher :
ISBN 13 : 9811215472
Total Pages : 498 pages
Book Rating : 4.76/5 ( download)

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Download or read book New Trends in Algebras and Combinatorics written by K. P. Shum and published by . This book was released on 2020 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : A. A. Ambily
Publisher : Springer Nature
ISBN 13 : 9811516111
Total Pages : 340 pages
Book Rating : 4.15/5 ( download)

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Download or read book Leavitt Path Algebras and Classical K-Theory written by A. A. Ambily and published by Springer Nature. This book was released on 2020-01-17 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book offers a comprehensive introduction to Leavitt path algebras (LPAs) and graph C*-algebras. Highlighting their significant connection with classical K-theory—which plays an important role in mathematics and its related emerging fields—this book allows readers from diverse mathematical backgrounds to understand and appreciate these structures. The articles on LPAs are mostly of an expository nature and the ones dealing with K-theory provide new proofs and are accessible to interested students and beginners of the field. It is a useful resource for graduate students and researchers working in this field and related areas, such as C*-algebras and symbolic dynamics.

Author : Kenneth R. Davidson
Publisher : American Mathematical Society, Fields Institute
ISBN 13 : 1470475081
Total Pages : 325 pages
Book Rating : 4.86/5 ( download)

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Download or read book C*-Algebras by Example written by Kenneth R. Davidson and published by American Mathematical Society, Fields Institute. This book was released on 2023-10-04 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: The subject of C*-algebras received a dramatic revitalization in the 1970s by the introduction of topological methods through the work of Brown, Douglas, and Fillmore on extensions of C*-algebras and Elliott's use of $K$-theory to provide a useful classification of AF algebras. These results were the beginning of a marvelous new set of tools for analyzing concrete C*-algebras. This book is an introductory graduate level text which presents the basics of the subject through a detailed analysis of several important classes of C*-algebras. The development of operator algebras in the last twenty years has been based on a careful study of these special classes. While there are many books on C*-algebras and operator algebras available, this is the first one to attempt to explain the real examples that researchers use to test their hypotheses. Topics include AF algebras, Bunce–Deddens and Cuntz algebras, the Toeplitz algebra, irrational rotation algebras, group C*-algebras, discrete crossed products, abelian C*-algebras (spectral theory and approximate unitary equivalence) and extensions. It also introduces many modern concepts and results in the subject such as real rank zero algebras, topological stable rank, quasidiagonality, and various new constructions. These notes were compiled during the author's participation in the special year on C*-algebras at The Fields Institute for Research in Mathematical Sciences during the 1994–1995 academic year. The field of C*-algebras touches upon many other areas of mathematics such as group representations, dynamical systems, physics, $K$-theory, and topology. The variety of examples offered in this text expose the student to many of these connections. Graduate students with a solid course in functional analysis should be able to read this book. This should prepare them to read much of the current literature. This book is reasonably self-contained, and the author has provided results from other areas when necessary.

Author : Jean Renault
Publisher : Springer
ISBN 13 : 3540392181
Total Pages : 164 pages
Book Rating : 4.87/5 ( download)

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Download or read book A Groupoid Approach to C*-Algebras written by Jean Renault and published by Springer. This book was released on 2006-11-15 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Alfred Hoblitzelle Clifford
Publisher : American Mathematical Soc.
ISBN 13 : 0821802720
Total Pages : 370 pages
Book Rating : 4.24/5 ( download)

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Download or read book The Algebraic Theory of Semigroups, Volume II written by Alfred Hoblitzelle Clifford and published by American Mathematical Soc.. This book was released on 1961 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: