Categories Of Operator Modules Morita Equivalence And Projective Modules

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Categories of Operator Modules (Morita Equivalence and Projective Modules)

Author : David P. Blecher
Publisher : American Mathematical Soc.
ISBN 13 : 082181916X
Total Pages : 109 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis Categories of Operator Modules (Morita Equivalence and Projective Modules) by : David P. Blecher

Download or read book Categories of Operator Modules (Morita Equivalence and Projective Modules) written by David P. Blecher and published by American Mathematical Soc.. This book was released on 2000 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt: We employ recent advances in the theory of operator spaces, also known as quantized functional analysis, to provide a context in which one can compare categories of modules over operator algebras that are not necessarily self-adjoint. We focus our attention on the category of Hilbert modules over an operator algebra and on the category of operator modules over an operator algebra. The module operations are assumed to be completely bounded - usually, completely contractive. Wedevelop the notion of a Morita context between two operator algebras A and B. This is a system (A,B,{} {A}X {B},{} {B} Y {A},(\cdot,\cdot),[\cdot,\cdot]) consisting of the algebras, two bimodules {A}X {B and {B}Y {A} and pairings (\cdot,\cdot) and [\cdot,\cdot] that induce (complete) isomorphisms betweenthe (balanced) Haagerup tensor products, X \otimes {hB} {} Y and Y \otimes {hA} {} X, and the algebras, A and B, respectively. Thus, formally, a Morita context is the same as that which appears in pure ring theory. The subtleties of the theory lie in the interplay between the pure algebra and the operator space geometry. Our analysis leads to viable notions of projective operator modules and dual operator modules. We show that two C*-algebras are Morita equivalent in our sense if and only ifthey are C*-algebraically strong Morita equivalent, and moreover the equivalence bimodules are the same. The distinctive features of the non-self-adjoint theory are illuminated through a number of examples drawn from complex analysis and the theory of incidence algebras over topological partial orders.Finally, an appendix provides links to the literature that developed since this Memoir was accepted for publication.

Operator Algebras and Their Modules

Author : David P. Blecher
Publisher : Oxford University Press
ISBN 13 : 0191523569
Total Pages : pages
Book Rating : 4.1/5 (915 download)

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Book Synopsis Operator Algebras and Their Modules by : David P. Blecher

Download or read book Operator Algebras and Their Modules written by David P. Blecher and published by Oxford University Press. This book was released on 2004-10-07 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This invaluable reference is the first to present the general theory of algebras of operators on a Hilbert space, and the modules over such algebras. The new theory of operator spaces is presented early on and the text assembles the basic concepts, theory and methodologies needed to equip a beginning researcher in this area. A major trend in modern mathematics, inspired largely by physics, is toward `noncommutative' or `quantized' phenomena. In functional analysis, this has appeared notably under the name of `operator spaces', which is a variant of Banach spaces which is particularly appropriate for solving problems concerning spaces or algebras of operators on Hilbert space arising in 'noncommutative mathematics'. The category of operator spaces includes operator algebras, selfadjoint (that is, C*-algebras) or otherwise. Also, most of the important modules over operator algebras are operator spaces. A common treatment of the subjects of C*-algebras, nonselfadjoint operator algebras, and modules over such algebras (such as Hilbert C*-modules), together under the umbrella of operator space theory, is the main topic of the book. A general theory of operator algebras, and their modules, naturally develops out of the operator space methodology. Indeed, operator space theory is a sensitive enough medium to reflect accurately many important noncommutative phenomena. Using recent advances in the field, the book shows how the underlying operator space structure captures, very precisely, the profound relations between the algebraic and the functional analytic structures involved. The rich interplay between spectral theory, operator theory, C*-algebra and von Neumann algebra techniques, and the influx of important ideas from related disciplines, such as pure algebra, Banach space theory, Banach algebras, and abstract function theory is highlighted. Each chapter ends with a lengthy section of notes containing a wealth of additional information.

Operator Algebras and Their Applications

Author : Peter A. Fillmore
Publisher : American Mathematical Soc.
ISBN 13 : 9780821871218
Total Pages : 338 pages
Book Rating : 4.8/5 (712 download)

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Book Synopsis Operator Algebras and Their Applications by : Peter A. Fillmore

Download or read book Operator Algebras and Their Applications written by Peter A. Fillmore and published by American Mathematical Soc.. This book was released on with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of operator algebras, which grew out of von Neumann's work in the 1920s and the 1930s on modelling quantum mechanics, has in recent years experienced tremendous growth and vitality. This growth has resulted in significant applications in other areas - both within and outside mathematics. The field was a natural candidate for a 1994-1995 program year in Operator Algebras and Applications held at The Fields Institute for Research in the Mathematical Sciences. This volume contains a selection of papers that arose from the seminars and workshops of the program. Topics covered include the classification of amenable C*-algebras, the Baum-Connes conjecture, E[subscript 0] semigroups, subfactors, E-theory, quasicrystals, and the solution to a long-standing problem in operator theory: Can almost commuting self-adjoint matrices be approximated by commuting self-adjoint matrices?

Operator Algebras, Quantization, and Noncommutative Geometry

Author : Robert S. Doran
Publisher : American Mathematical Soc.
ISBN 13 : 0821834029
Total Pages : 434 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis Operator Algebras, Quantization, and Noncommutative Geometry by : Robert S. Doran

Download or read book Operator Algebras, Quantization, and Noncommutative Geometry written by Robert S. Doran and published by American Mathematical Soc.. This book was released on 2004 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: John von Neumann and Marshall Stone were two giants of Twentieth Century mathematics. In honor of the 100th anniversary of their births, a mathematical celebration was organized featuring developments in fields where both men were major influences. This volume contains articles from the AMS Special Session, Operator Algebras, Quantization and Noncommutative Geometry: A Centennial Celebration in Honor of John von Neumann and Marshall H. Stone. Papers range from expository and refereed and cover a broad range of mathematical topics reflecting the fundamental ideas of von Neumann and Stone. Most contributions are expanded versions of the talks and were written exclusively for this volume. Included, among Also featured is a reprint of P.R. Halmos's The Legend of John von Neumann. The book is suitable for graduate students and researchers interested in operator algebras and applications, including noncommutative geometry.

The Spectrum of a Module Category

Author : Henning Krause
Publisher : American Mathematical Soc.
ISBN 13 : 0821826182
Total Pages : 143 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis The Spectrum of a Module Category by : Henning Krause

Download or read book The Spectrum of a Module Category written by Henning Krause and published by American Mathematical Soc.. This book was released on 2001 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt: These notes present an introduction into the spectrum of the category of modules over a ring. We discuss the general theory of pure-injective modules and concentrate on the isomorphism classes of indecomposable pure-injective modules which form the underlying set of this spectrum. The interplay between the spectrum and the category of finitely presented modules provides new insight into the geometrical and homological properties of the category of finitely presented modules. Various applications from representation theory of finite dimensional algebras are included.

Completely Bounded Maps and Operator Algebras

Author : Vern Paulsen
Publisher : Cambridge University Press
ISBN 13 : 9780521816694
Total Pages : 316 pages
Book Rating : 4.8/5 (166 download)

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Book Synopsis Completely Bounded Maps and Operator Algebras by : Vern Paulsen

Download or read book Completely Bounded Maps and Operator Algebras written by Vern Paulsen and published by Cambridge University Press. This book was released on 2002 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book, first published in 2003, the reader is provided with a tour of the principal results and ideas in the theories of completely positive maps, completely bounded maps, dilation theory, operator spaces and operator algebras, together with some of their main applications. The author assumes only that the reader has a basic background in functional analysis, and the presentation is self-contained and paced appropriately for graduate students new to the subject. Experts will also want this book for their library since the author illustrates the power of methods he has developed with new and simpler proofs of some of the major results in the area, many of which have not appeared earlier in the literature. An indispensable introduction to the theory of operator spaces for all who want to know more.

Operator Algebras and Applications

Author : A. Katavolos
Publisher : Springer Science & Business Media
ISBN 13 : 9401155003
Total Pages : 470 pages
Book Rating : 4.4/5 (11 download)

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Book Synopsis Operator Algebras and Applications by : A. Katavolos

Download or read book Operator Algebras and Applications written by A. Katavolos and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last few years, the theory of operator algebras, particularly non-self-adjoint operator algebras, has evolved dramatically, experiencing both international growth and interfacing with other important areas. The present volume presents a survey of some of the latest developments in the field in a form that is detailed enough to be accessible to advanced graduate students as well as researchers in the field. Among the topics treated are: operator spaces, Hilbert modules, limit algebras, reflexive algebras and subspaces, relations to basis theory, C* algebraic quantum groups, endomorphisms of operator algebras, conditional expectations and projection maps, and applications, particularly to wavelet theory. The volume also features an historical paper offering a new approach to the Pythagoreans' discovery of irrational numbers.

Groupoids in Analysis, Geometry, and Physics

Author : Arlan Ramsay
Publisher : American Mathematical Soc.
ISBN 13 : 0821820427
Total Pages : 208 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis Groupoids in Analysis, Geometry, and Physics by : Arlan Ramsay

Download or read book Groupoids in Analysis, Geometry, and Physics written by Arlan Ramsay and published by American Mathematical Soc.. This book was released on 2001 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: Groupoids often occur when there is symmetry of a nature not expressible in terms of groups. Other uses of groupoids can involve something of a dynamical nature. Indeed, some of the main examples come from group actions. It should also be noted that in many situations where groupoids have been used, the main emphasis has not been on symmetry or dynamics issues. While the implicit symmetry and dynamics are relevant, the groupoid records mostly the structure of the space of leaves and the holonomy. More generally, the use of groupoids is very much related to various notions of orbit equivalance. This book presents the proceedings from the Joint Summer Research Conference on ``Groupoids in Analysis, Geometry, and Physics'' held in Boulder, CO. The book begins with an introduction to ways in which groupoids allow a more comprehensive view of symmetry than is seen via groups. Topics range from foliations, pseudo-differential operators, $KK$-theory, amenability, Fell bundles, and index theory to quantization of Poisson manifolds. Readers will find examples of important tools for working with groupoids. This book is geared to students and researchers. It is intended to improve their understanding of groupoids and to encourage them to look further while learning about the tools used.

The Calculus of One-Sided $M$-Ideals and Multipliers in Operator Spaces

Author : David P. Blecher
Publisher : American Mathematical Soc.
ISBN 13 : 0821838237
Total Pages : 102 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis The Calculus of One-Sided $M$-Ideals and Multipliers in Operator Spaces by : David P. Blecher

Download or read book The Calculus of One-Sided $M$-Ideals and Multipliers in Operator Spaces written by David P. Blecher and published by American Mathematical Soc.. This book was released on 2006 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: The theory of one-sided $M$-ideals and multipliers of operator spaces is simultaneously a generalization of classical $M$-ideals, ideals in operator algebras, and aspects of the theory of Hilbert $C*$-modules and their maps. Here we give a systematic exposition of this theory. The main part of this memoir consists of a 'calculus' for one-sided $M$-ideals and multipliers, i.e. a collection of the properties of one-sided $M$-ideals and multipliers with respect to the basic constructions met in functional analysis. This is intended to be a reference tool for 'noncommutative functional analysts' who may encounter a one-sided $M$-ideal or multiplier in their work.

Black Box Classical Groups

Author : William M. Kantor
Publisher : American Mathematical Soc.
ISBN 13 : 0821826190
Total Pages : 183 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis Black Box Classical Groups by : William M. Kantor

Download or read book Black Box Classical Groups written by William M. Kantor and published by American Mathematical Soc.. This book was released on 2001 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt: If a black box simple group is known to be isomorphic to a classical group over a field of known characteristic, a Las Vegas algorithm is used to produce an explicit isomorphism. The proof relies on the geometry of the classical groups rather than on difficult group-theoretic background. This algorithm has applications to matrix group questions and to nearly linear time algorithms for permutation groups. In particular, we upgrade all known nearly linear time Monte Carlo permutation group algorithms to nearly linear Las Vegas algorithms when the input group has no composition factor isomorphic to an exceptional group of Lie type or a 3-dimensional unitary group.

Ruelle Operators: Functions which Are Harmonic with Respect to a Transfer Operator

Author : Palle E. T. Jørgensen
Publisher : American Mathematical Soc.
ISBN 13 : 0821826883
Total Pages : 74 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis Ruelle Operators: Functions which Are Harmonic with Respect to a Transfer Operator by : Palle E. T. Jørgensen

Download or read book Ruelle Operators: Functions which Are Harmonic with Respect to a Transfer Operator written by Palle E. T. Jørgensen and published by American Mathematical Soc.. This book was released on 2001 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: Let $N\in\mathbb{N}$, $N\geq2$, be given. Motivated by wavelet analysis, this title considers a class of normal representations of the $C DEGREES{\ast}$-algebra $\mathfrak{A}_{N}$ on two unitary generators $U$, $V$ subject to the relation $UVU DEGREES{-1}=V DEGREES{N}$. The representations are in one-to-one correspondence with solutions $h\in L DEGREES{1}\left(\mathbb{T}\right)$, $h\geq0$, to $R\left(h\right)=h$ where $R$ is a certain transfer operator (positivity-preserving) which was studied previously by D. Ruelle. The representations of $\mathfrak{A}_{N}$ may also be viewed as representations of a certain (discrete) $N$-adic $ax+b$ group which was considered recently

The Dirichlet Problem for Parabolic Operators with Singular Drift Terms

Author : Steve Hofmann
Publisher : American Mathematical Soc.
ISBN 13 : 0821826840
Total Pages : 129 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis The Dirichlet Problem for Parabolic Operators with Singular Drift Terms by : Steve Hofmann

Download or read book The Dirichlet Problem for Parabolic Operators with Singular Drift Terms written by Steve Hofmann and published by American Mathematical Soc.. This book was released on 2001 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt: This memoir considers the Dirichlet problem for parabolic operators in a half space with singular drift terms. Chapter I begins the study of a parabolic PDE modelled on the pullback of the heat equation in certain time varying domains considered by Lewis-Murray and Hofmann-Lewis. Chapter II obtains mutual absolute continuity of parabolic measure and Lebesgue measure on the boundary of this halfspace and also that the $L DEGREESq(R DEGREESn)$ Dirichlet problem for these PDEs has a solution when $q$ is large enough. Chapter III proves an analogue of a theorem of Fefferman, Kenig, and Pipher for certain parabolic PDEs with singular drift terms. Each of the chapters that comprise this memoir has its own numbering system and list

Special Groups

Author : M. A. Dickmann
Publisher : American Mathematical Soc.
ISBN 13 : 0821820575
Total Pages : 271 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis Special Groups by : M. A. Dickmann

Download or read book Special Groups written by M. A. Dickmann and published by American Mathematical Soc.. This book was released on 2000 with total page 271 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph presents a systematic study of Special Groups, a first-order universal-existential axiomatization of the theory of quadratic forms, which comprises the usual theory over fields of characteristic different from 2, and is dual to the theory of abstract order spaces. The heart of our theory begins in Chapter 4 with the result that Boolean algebras have a natural structure of reduced special group. More deeply, every such group is canonically and functorially embedded in a certain Boolean algebra, its Boolean hull. This hull contains a wealth of information about the structure of the given special group, and much of the later work consists in unveiling it. Thus, in Chapter 7 we introduce two series of invariants "living" in the Boolean hull, which characterize the isometry of forms in any reduced special group. While the multiplicative series--expressed in terms of meet and symmetric difference--constitutes a Boolean version of the Stiefel-Whitney invariants, the additive series--expressed in terms of meet and join--, which we call Horn-Tarski invariants, does not have a known analog in the field case; however, the latter have a considerably more regular behaviour. We give explicit formulas connecting both series, and compute explicitly the invariants for Pfister forms and their linear combinations. In Chapter 9 we combine Boolean-theoretic methods with techniques from Galois cohomology and a result of Voevodsky to obtain an affirmative solution to a long standing conjecture of Marshall concerning quadratic forms over formally real Pythagorean fields. Boolean methods are put to work in Chapter 10 to obtain information about categories of special groups, reduced or not. And again in Chapter 11 to initiate the model-theoretic study of the first-order theory of reduced special groups, where, amongst other things we determine its model-companion. The first-order approach is also present in the study of some outstanding classes of morphisms carried out in Chapter 5, e.g., the pure embeddings of special groups. Chapter 6 is devoted to the study of special groups of continuous functions.

Invariant Measures for Unitary Groups Associated to Kac-Moody Lie Algebras

Author : Doug Pickrell
Publisher : American Mathematical Soc.
ISBN 13 : 0821820680
Total Pages : 143 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis Invariant Measures for Unitary Groups Associated to Kac-Moody Lie Algebras by : Doug Pickrell

Download or read book Invariant Measures for Unitary Groups Associated to Kac-Moody Lie Algebras written by Doug Pickrell and published by American Mathematical Soc.. This book was released on 2000 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main purpose of this paper is to prove the existence, and in some cases the uniqueness, of unitarily invariant measures on formal completions of groups associated to affine Kac-Moody algebras, and associated homogeneous spaces. The basic invariant measure is a natural generalization of Haar measure for a simply connected compact Lie group, and its projection to flag spaces is a generalization of the normalized invariant volume element. The other "invariant measures" are actually measures having values in line bundles over these spaces; these bundle-valued measures heuristically arise from coupling the basic invariant measure to Hermitian structures on associated line bundles, but in this infinite dimensional setting they are generally singular with respect to the basic invariant measure.

Canonical Sobolev Projections of Weak Type $(1,1)$

Author : Earl Berkson
Publisher : American Mathematical Soc.
ISBN 13 : 0821826654
Total Pages : 90 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis Canonical Sobolev Projections of Weak Type $(1,1)$ by : Earl Berkson

Download or read book Canonical Sobolev Projections of Weak Type $(1,1)$ written by Earl Berkson and published by American Mathematical Soc.. This book was released on 2001 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: Let $\mathcal S$ be a second order smoothness in the $\mathbb{R} DEGREESn$ setting. We can assume without loss of generality that the dimension $n$ has been adjusted as necessary so as to insure that $\mathcal S$ is also non-degenerate. This title describes how $\mathcal S$ must fit into one of three mutually exclusive cases, and in each of these cases the authors characterize, by a simple intrinsic condition, the second order smoothnesses $\mathcal S$ whose canonical Sobolev projection $P_{\mathcal{S}}$ is of weak type $(1,1)$ in the $\mathbb{R} DEGR

Introduction to Operator Space Theory

Author : Gilles Pisier
Publisher : Cambridge University Press
ISBN 13 : 9780521811651
Total Pages : 492 pages
Book Rating : 4.8/5 (116 download)

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Book Synopsis Introduction to Operator Space Theory by : Gilles Pisier

Download or read book Introduction to Operator Space Theory written by Gilles Pisier and published by Cambridge University Press. This book was released on 2003-08-25 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt: An introduction to the theory of operator spaces, emphasising applications to C*-algebras.

Quantum Linear Groups and Representations of $GL_n({\mathbb F}_q)$

$Download Quantum Linear Groups and Representations of $GL_n({\mathbb F}_q)$ PDF Online Free$

Author : Jonathan Brundan
Publisher : American Mathematical Soc.
ISBN 13 : 0821826166
Total Pages : 127 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis Quantum Linear Groups and Representations of $GL_n({\mathbb F}_q)$ by : Jonathan Brundan

Download or read book Quantum Linear Groups and Representations of $GL_n({\mathbb F}_q)$ written by Jonathan Brundan and published by American Mathematical Soc.. This book was released on 2001 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt: We give a self-contained account of the results originating in the work of James and the second author in the 1980s relating the representation theory of GL[n(F[q) over fields of characteristic coprime to q to the representation theory of "quantum GL[n" at roots of unity. The new treatment allows us to extend the theory in several directions. First, we prove a precise functorial connection between the operations of tensor product in quantum GL[n and Harish-Chandra induction in finite GL[n. This allows us to obtain a version of the recent Morita theorem of Cline, Parshall and Scott valid in addition for p-singular classes. From that we obtain simplified treatments of various basic known facts, such as the computation of decomposition numbers and blocks of GL[n(F[q) from knowledge of the same for the quantum group, and the non-defining analogue of Steinberg's tensor product theorem. We also easily obtain a new double centralizer property between GL[n(F[[q) and quantum GL[n, generalizing a result of Takeuchi. Finally, we apply the theory to study the affine general linear group, following ideas of Zelevinsky in characteristic zero. We prove results that can be regarded as the modular analogues of Zelevinsky's and Thoma's branching rules. Using these, we obtain a new dimension formula for the irreducible cross-characteristic representations of GL[n(F[q), expressing their dimensions in terms of the characters of irreducible modules over the quantum group.