C*-algebra Extensions and K-homology

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Publisher : Princeton University Press
ISBN 13 : 9780691082660
Total Pages : 112 pages
Book Rating : 4.0/5 (826 download)

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Book Synopsis C*-algebra Extensions and K-homology by : Ronald G. Douglas

Download or read book C*-algebra Extensions and K-homology written by Ronald G. Douglas and published by Princeton University Press. This book was released on 1980-07-21 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent developments in diverse areas of mathematics suggest the study of a certain class of extensions of C*-algebras. Here, Ronald Douglas uses methods from homological algebra to study this collection of extensions. He first shows that equivalence classes of the extensions of the compact metrizable space X form an abelian group Ext (X). Second, he shows that the correspondence X ⃗ Ext (X) defines a homotopy invariant covariant functor which can then be used to define a generalized homology theory. Establishing the periodicity of order two, the author shows, following Atiyah, that a concrete realization of K-homology is obtained.

$C^*$-Algebra Extensions of $C(X)$

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Author :
Publisher : American Mathematical Soc.
ISBN 13 : 0821826115
Total Pages : 89 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis $C^*$-Algebra Extensions of $C(X)$ by : Huaxin Lin

Download or read book $C^*$-Algebra Extensions of $C(X)$ written by Huaxin Lin and published by American Mathematical Soc.. This book was released on 1995 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work shows that the Weyl-von Neumann theorem for unitaries holds for $\sigma$-unital $AF$-algebras and their multiplier algebras. Lin studies $E(X,A)$, the quotient of $\mathrm{{\mathbf{Ext}}}^{eu}_s(C(X),A)$ by a special class of trivial extension, dubbed totally trivial extensions. This leads to a BDF-type classification for extensions of $C(X)$ by a $\sigma$-unital purely infinite simple $C^*$-algebra with trivial $K_1$-group. Lin also shows that, when $X$ is a compact subset of the plane, every extension of $C(X)$ by a finite matroid $C^*$-algebra is totally trivial. Classification of these extensions for nice spaces is given, as are some other versions of the Weyl-von Neumann-Berg theorem.

C*-Algebra Extensions and K-Homology. (AM-95), Volume 95

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Publisher : Princeton University Press
ISBN 13 : 1400881463
Total Pages : 96 pages
Book Rating : 4.4/5 (8 download)

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Book Synopsis C*-Algebra Extensions and K-Homology. (AM-95), Volume 95 by : Ronald G. Douglas

Download or read book C*-Algebra Extensions and K-Homology. (AM-95), Volume 95 written by Ronald G. Douglas and published by Princeton University Press. This book was released on 2016-03-02 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent developments in diverse areas of mathematics suggest the study of a certain class of extensions of C*-algebras. Here, Ronald Douglas uses methods from homological algebra to study this collection of extensions. He first shows that equivalence classes of the extensions of the compact metrizable space X form an abelian group Ext (X). Second, he shows that the correspondence X ⃗ Ext (X) defines a homotopy invariant covariant functor which can then be used to define a generalized homology theory. Establishing the periodicity of order two, the author shows, following Atiyah, that a concrete realization of K-homology is obtained.

C*-Algebra Extensions and K-Homology

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Author :
Publisher : Books on Demand
ISBN 13 : 9780608066172
Total Pages : 93 pages
Book Rating : 4.0/5 (661 download)

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Book Synopsis C*-Algebra Extensions and K-Homology by : Ronald G. Douglas

Download or read book C*-Algebra Extensions and K-Homology written by Ronald G. Douglas and published by Books on Demand. This book was released on 1980 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt:

C*-algebra Extensions and K-homology

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Author :
Publisher : Books on Demand
ISBN 13 : 9780608066172
Total Pages : 93 pages
Book Rating : 4.0/5 (661 download)

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Book Synopsis C*-algebra Extensions and K-homology by : Ronald G. Douglas

Download or read book C*-algebra Extensions and K-homology written by Ronald G. Douglas and published by Books on Demand. This book was released on 1980-01-01 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt:

An Extension of Mackey's Method to Banach *-Algebraic Bundles

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Author :
Publisher : American Mathematical Soc.
ISBN 13 : 0821812904
Total Pages : 172 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis An Extension of Mackey's Method to Banach *-Algebraic Bundles by : James Michael Gardner Fell

Download or read book An Extension of Mackey's Method to Banach *-Algebraic Bundles written by James Michael Gardner Fell and published by American Mathematical Soc.. This book was released on 1969 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main object of the present memoir is to show that the methods and results of Mackey (1958) and Blattner (1963) on the group extension representation problem go through without any essential change in the larger context of homogeneous Banach *-algebraic bundles (with enough cross sections). In order to dispense with separability we shall follow the topological methods of Blattner rather than Mackey's more detailed measure-theoretic analysis. Except for the last section, Part II of this memoir is in fact a rewriting of much of Blattner's papers (1963), making the modifications necessary in the larger context of bundles. The last Section 17 gives an account of the 'Mackey obstruction' in the nonseparable case, leading to an analogue (Theorem 17.2) of Theorem 8.2 of Mackey's paper for homogeneous Banach *-algebraic bundles, without separability restrictions. This is the culminating point of the present memoir.

C*-algebras by Example

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Author :
Publisher : American Mathematical Soc.
ISBN 13 : 9780821871898
Total Pages : 336 pages
Book Rating : 4.8/5 (718 download)

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Book Synopsis C*-algebras by Example by : Kenneth R. Davidson

Download or read book C*-algebras by Example written by Kenneth R. Davidson and published by American Mathematical Soc.. This book was released on 1996 with total page 336 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. Topic 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 of Mathematics 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. A graduate student 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.

Homological Algebra (PMS-19), Volume 19

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Publisher : Princeton University Press
ISBN 13 : 1400883849
Total Pages : 408 pages
Book Rating : 4.4/5 (8 download)

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Book Synopsis Homological Algebra (PMS-19), Volume 19 by : Henry Cartan

Download or read book Homological Algebra (PMS-19), Volume 19 written by Henry Cartan and published by Princeton University Press. This book was released on 2016-06-02 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: When this book was written, methods of algebraic topology had caused revolutions in the world of pure algebra. To clarify the advances that had been made, Cartan and Eilenberg tried to unify the fields and to construct the framework of a fully fledged theory. The invasion of algebra had occurred on three fronts through the construction of cohomology theories for groups, Lie algebras, and associative algebras. This book presents a single homology (and also cohomology) theory that embodies all three; a large number of results is thus established in a general framework. Subsequently, each of the three theories is singled out by a suitable specialization, and its specific properties are studied. The starting point is the notion of a module over a ring. The primary operations are the tensor product of two modules and the groups of all homomorphisms of one module into another. From these, "higher order" derived of operations are obtained, which enjoy all the properties usually attributed to homology theories. This leads in a natural way to the study of "functors" and of their "derived functors." This mathematical masterpiece will appeal to all mathematicians working in algebraic topology.

Commutative Algebra and Noncommutative Algebraic Geometry

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Publisher : Cambridge University Press
ISBN 13 : 110714972X
Total Pages : 303 pages
Book Rating : 4.1/5 (71 download)

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Book Synopsis Commutative Algebra and Noncommutative Algebraic Geometry by : David Eisenbud

Download or read book Commutative Algebra and Noncommutative Algebraic Geometry written by David Eisenbud and published by Cambridge University Press. This book was released on 2015-11-19 with total page 303 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book surveys fundamental current topics in these two areas of research, emphasising the lively interaction between them. Volume 2 focuses on the most recent research.

Noncommutative Geometry and Cayley-smooth Orders

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Publisher : CRC Press
ISBN 13 : 1420064231
Total Pages : 592 pages
Book Rating : 4.4/5 (2 download)

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Book Synopsis Noncommutative Geometry and Cayley-smooth Orders by : Lieven Le Bruyn

Download or read book Noncommutative Geometry and Cayley-smooth Orders written by Lieven Le Bruyn and published by CRC Press. This book was released on 2007-08-24 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt: Noncommutative Geometry and Cayley-smooth Orders explains the theory of Cayley-smooth orders in central simple algebras over function fields of varieties. In particular, the book describes the etale local structure of such orders as well as their central singularities and finite dimensional representations. After an introduction to partial d

Field Theory

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Publisher : Alpha Science Int'l Ltd.
ISBN 13 : 9781842651919
Total Pages : 312 pages
Book Rating : 4.6/5 (519 download)

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Book Synopsis Field Theory by : I. S. Luthar

Download or read book Field Theory written by I. S. Luthar and published by Alpha Science Int'l Ltd.. This book was released on 2004 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Starting with the basic notions and results in algebraic extensions, in this final volume the authors give an exposition of the work of Galois on the solubility of equations by radicals, including Kummer and Artin-Schreier extensions before providing an extensive study on field theory.

Formal Models and Semantics

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Publisher : Elsevier
ISBN 13 : 0080933920
Total Pages : 1280 pages
Book Rating : 4.0/5 (89 download)

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Book Synopsis Formal Models and Semantics by : Gerard Meurant

Download or read book Formal Models and Semantics written by Gerard Meurant and published by Elsevier. This book was released on 2014-06-28 with total page 1280 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second part of this Handbook presents a choice of material on the theory of automata and rewriting systems, the foundations of modern programming languages, logics for program specification and verification, and some chapters on the theoretic modelling of advanced information processing.

Normal Surface Singularities

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Publisher : Springer Nature
ISBN 13 : 3031067533
Total Pages : 732 pages
Book Rating : 4.0/5 (31 download)

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Book Synopsis Normal Surface Singularities by : András Némethi

Download or read book Normal Surface Singularities written by András Némethi and published by Springer Nature. This book was released on 2022-10-07 with total page 732 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph provides a comprehensive introduction to the theory of complex normal surface singularities, with a special emphasis on connections to low-dimensional topology. In this way, it unites the analytic approach with the more recent topological one, combining their tools and methods. In the first chapters, the book sets out the foundations of the theory of normal surface singularities. This includes a comprehensive presentation of the properties of the link (as an oriented 3-manifold) and of the invariants associated with a resolution, combined with the structure and special properties of the line bundles defined on a resolution. A recurring theme is the comparison of analytic and topological invariants. For example, the Poincaré series of the divisorial filtration is compared to a topological zeta function associated with the resolution graph, and the sheaf cohomologies of the line bundles are compared to the Seiberg–Witten invariants of the link. Equivariant Ehrhart theory is introduced to establish surgery-additivity formulae of these invariants, as well as for the regularization procedures of multivariable series. In addition to recent research, the book also provides expositions of more classical subjects such as the classification of plane and cuspidal curves, Milnor fibrations and smoothing invariants, the local divisor class group, and the Hilbert–Samuel function. It contains a large number of examples of key families of germs: rational, elliptic, weighted homogeneous, superisolated and splice-quotient. It provides concrete computations of the topological invariants of their links (Casson(–Walker) and Seiberg–Witten invariants, Turaev torsion) and of the analytic invariants (geometric genus, Hilbert function of the divisorial filtration, and the analytic semigroup associated with the resolution). The book culminates in a discussion of the topological and analytic lattice cohomologies (as categorifications of the Seiberg–Witten invariant and of the geometric genus respectively) and of the graded roots. Several open problems and conjectures are also formulated. Normal Surface Singularities provides researchers in algebraic and differential geometry, singularity theory, complex analysis, and low-dimensional topology with an invaluable reference on this rich topic, offering a unified presentation of the major results and approaches.

Algebra, Geometry and Mathematical Physics

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Publisher : Springer
ISBN 13 : 3642553613
Total Pages : 684 pages
Book Rating : 4.6/5 (425 download)

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Book Synopsis Algebra, Geometry and Mathematical Physics by : Abdenacer Makhlouf

Download or read book Algebra, Geometry and Mathematical Physics written by Abdenacer Makhlouf and published by Springer. This book was released on 2014-06-17 with total page 684 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book collects the proceedings of the Algebra, Geometry and Mathematical Physics Conference, held at the University of Haute Alsace, France, October 2011. Organized in the four areas of algebra, geometry, dynamical symmetries and conservation laws and mathematical physics and applications, the book covers deformation theory and quantization; Hom-algebras and n-ary algebraic structures; Hopf algebra, integrable systems and related math structures; jet theory and Weil bundles; Lie theory and applications; non-commutative and Lie algebra and more. The papers explore the interplay between research in contemporary mathematics and physics concerned with generalizations of the main structures of Lie theory aimed at quantization and discrete and non-commutative extensions of differential calculus and geometry, non-associative structures, actions of groups and semi-groups, non-commutative dynamics, non-commutative geometry and applications in physics and beyond. The book benefits a broad audience of researchers and advanced students.

Differential Algebra, Complex Analysis and Orthogonal Polynomials

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Publisher : American Mathematical Soc.
ISBN 13 : 0821848860
Total Pages : 241 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis Differential Algebra, Complex Analysis and Orthogonal Polynomials by : Primitivo B. Acosta Humanez

Download or read book Differential Algebra, Complex Analysis and Orthogonal Polynomials written by Primitivo B. Acosta Humanez and published by American Mathematical Soc.. This book was released on 2010 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents the 2007-2008 Jairo Charris Seminar in Algebra and Analysis on Differential Algebra, Complex Analysis and Orthogonal Polynomials, which was held at the Universidad Sergio Arboleda in Bogota, Colombia.

Topological Algebras and Applications

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Author :
Publisher : American Mathematical Soc.
ISBN 13 : 0821838687
Total Pages : 442 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis Topological Algebras and Applications by : Anastasios Mallios

Download or read book Topological Algebras and Applications written by Anastasios Mallios and published by American Mathematical Soc.. This book was released on 2007 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Fifth International Conference on Topological Algebras and Applications was held in Athens, Greece, from June 27th to July 1st of 2005. The main topic of the Conference was general theory of topological algebras and its various applications, with emphasis on the ""non-normed"" case. In addition to the study of the internal structure of non-normed, and even non-locally convex topological algebras, there are applications to other branches of mathematics, such as differential geometry of smooth manifolds, and mathematical physics, such as quantum relativity and quantum cosmology. Operator theory of unbounded operators and related non-normed topological algebras are intensively studied here. Other topics presented in this volume are topological homological algebra, topological algebraic geometry, sheaf theory and $K$-theory.

Elementary Algebraic Geometry

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Author :
Publisher : Courier Dover Publications
ISBN 13 : 048680187X
Total Pages : 320 pages
Book Rating : 4.4/5 (868 download)

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Book Synopsis Elementary Algebraic Geometry by : Keith Kendig

Download or read book Elementary Algebraic Geometry written by Keith Kendig and published by Courier Dover Publications. This book was released on 2015-01-19 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Designed to make learning introductory algebraic geometry as easy as possible, this text is intended for advanced undergraduates and graduate students who have taken a one-year course in algebra and are familiar with complex analysis. This newly updated second edition enhances the original treatment's extensive use of concrete examples and exercises with numerous figures that have been specially redrawn in Adobe Illustrator. An introductory chapter that focuses on examples of curves is followed by a more rigorous and careful look at plane curves. Subsequent chapters explore commutative ring theory and algebraic geometry as well as varieties of arbitrary dimension and some elementary mathematics on curves. Upon finishing the text, students will have a foundation for advancing in several different directions, including toward a further study of complex algebraic or analytic varieties or to the scheme-theoretic treatments of algebraic geometry. 2015 edition.