Problems in the Classification of E0-semigroups

Problems in the Classification of E0-semigroups PDF Author: Masayasu Aotani
Publisher:
ISBN:
Category :
Languages : en
Pages : 378

Get Book Here

Book Description

Problems in the Classification of E0-semigroups

Problems in the Classification of E0-semigroups PDF Author: Masayasu Aotani
Publisher:
ISBN:
Category :
Languages : en
Pages : 378

Get Book Here

Book Description


Noncommutative Dynamics and E-Semigroups

Noncommutative Dynamics and E-Semigroups PDF Author: William Arveson
Publisher: Springer Science & Business Media
ISBN: 0387215247
Category : Mathematics
Languages : en
Pages : 442

Get Book Here

Book Description
This book introduces the notion of an E-semigroup, a generalization of the known concept of E_O-semigroup. These objects are families of endomorphisms of a von Neumann algebra satisfying certain natural algebraic and continuity conditions. Its thorough approach is ideal for graduate students and research mathematicians.

Classification of $E_0$-Semigroups by Product Systems

Classification of $E_0$-Semigroups by Product Systems PDF Author: Michael Skeide
Publisher: American Mathematical Soc.
ISBN: 1470417383
Category : Mathematics
Languages : en
Pages : 138

Get Book Here

Book Description
In these notes the author presents a complete theory of classification of E0-semigroups by product systems of correspondences. As an application of his theory, he answers the fundamental question if a Markov semigroup admits a dilation by a cocycle perturbations of noise: It does if and only if it is spatial.

Advances in Quantum Dynamics

Advances in Quantum Dynamics PDF Author: Geoffrey L. Price
Publisher: American Mathematical Soc.
ISBN: 0821832158
Category : Mathematics
Languages : en
Pages : 338

Get Book Here

Book Description
This volume contains the proceedings of the conference on Advances in Quantum Dynamics. The purpose of the conference was to assess the current state of knowledge and to outline future research directions of quantum dynamical semigroups on von Neumann algebras. Since the appearance of the landmark papers by F. Murray and J. von Neumann, On the Rings of Operators, von Neumann algebras have been used as a mathematical model in the study of time evolution of quantum mechanical systems.Following the work of M. H. Stone, von Neumann, and others on the structure of one-parameter groups of unitary transformations, many researchers have made fundamental contributions to the understanding of time-reversible dynamical systems. This book deals with the mathematics of time-irreversiblesystems, also called dissipative systems. The time parameter is the half-line, and the transformations are now endomorphisms as opposed to automorphisms. For over a decade, W. B. Arveson and R. T. Powers have pioneered the effort to understand the structure of irreversible quantum dynamical systems on von Neumann algebras. Their papers in this volume serve as an excellent introduction to the theory. Also included are contributions in other areas which have had an impact on the theory, such asBrownian motion, dilation theory, quantum probability, and free probability. The volume is suitable for graduate students and research mathematicians interested in the dynamics of quantum systems and corresponding topics in the theory of operator algebras.

Operator Theory, Operator Algebras, and Applications

Operator Theory, Operator Algebras, and Applications PDF Author: Deguang Han
Publisher: American Mathematical Soc.
ISBN: 0821839233
Category : Mathematics
Languages : en
Pages : 440

Get Book Here

Book Description
This book offers a presentation of some new trends in operator theory and operator algebras, with a view to their applications. It consists of separate papers written by some of the leading practitioners in the field. The content is put together by the three editors in a way that should help students and working mathematicians in other parts of the mathematical sciences gain insight into an important part of modern mathematics and its applications. While different specialist authors are outlining new results in this book, the presentations have been made user friendly with the aid of tutorial material. In fact, each paper contains three things: a friendly introduction with motivation, tutorial material, and new research. The authors have strived to make their results relevant to the rest of mathematics. A list of topics discussed in the book includes wavelets, frames and their applications, quantum dynamics, multivariable operator theory, $C*$-algebras, and von Neumann algebras. Some longer papers present recent advances on particular, long-standing problems such as extensions and dilations, the Kadison-Singer conjecture, and diagonals of self-adjoint operators.

Selected Papers on Probability and Statistics

Selected Papers on Probability and Statistics PDF Author:
Publisher: American Mathematical Soc.
ISBN: 0821848216
Category : Mathematics
Languages : en
Pages : 243

Get Book Here

Book Description
This volume contains translations of papers that originally appeared in the Japanese journal Sugaku. The papers range over a variety of topics in probability theory, statistics, and applications. This volume is suitable for graduate students and research mathematicians interested in probability and statistics.

The Diophantine Frobenius Problem

The Diophantine Frobenius Problem PDF Author: Jorge L. Ramírez Alfonsín
Publisher: Oxford University Press, USA
ISBN: 0198568207
Category : Mathematics
Languages : en
Pages : 260

Get Book Here

Book Description
During the early part of the last century, Ferdinand Georg Frobenius (1849-1917) raised he following problem, known as the Frobenius Problem (FP): given relatively prime positive integers a1,...,an, find the largest natural number (called the Frobenius number and denoted by g(a1,...,an) that is not representable as a nonnegative integer combination of a1,...,an, . At first glance FP may look deceptively specialized. Nevertheless it crops up again and again in the most unexpected places and has been extremely useful in investigating many different problems. A number of methods, from several areas of mathematics, have been used in the hope of finding a formula giving the Frobenius number and algorithms to calculate it. The main intention of this book is to highlight such methods, ideas, viewpoints and applications to a broader audience.

The $abc$-Problem for Gabor Systems

The $abc$-Problem for Gabor Systems PDF Author: Xin-Rong Dai
Publisher: American Mathematical Soc.
ISBN: 1470420155
Category : Mathematics
Languages : en
Pages : 116

Get Book Here

Book Description
A longstanding problem in Gabor theory is to identify time-frequency shifting lattices aZ×bZ and ideal window functions χI on intervals I of length c such that {e−2πinbtχI(t−ma): (m,n)∈Z×Z} are Gabor frames for the space of all square-integrable functions on the real line. In this paper, the authors create a time-domain approach for Gabor frames, introduce novel techniques involving invariant sets of non-contractive and non-measure-preserving transformations on the line, and provide a complete answer to the above abc-problem for Gabor systems.

Fields of Logic and Computation

Fields of Logic and Computation PDF Author: Andreas Blass
Publisher: Springer Science & Business Media
ISBN: 3642150241
Category : Computers
Languages : en
Pages : 637

Get Book Here

Book Description
This Festschrift volume, published in honor of Yuri Gurevich on the occasion of his 70th birthday, contains contributions, written by his colleagues. The collection of articles herein begins with an academic biography, an annotated list of Yuri's publications and reports, and a personal tribute by Jan Van den Bussche. These are followed by 28 technical contributions. These articles - though they cover a broad range of topics - represent only a fraction of Yuri Gurevich’s multiple areas of interest.

An Inverse Spectral Problem Related to the Geng-Xue Two-Component Peakon Equation

An Inverse Spectral Problem Related to the Geng-Xue Two-Component Peakon Equation PDF Author: Hans Lundmark
Publisher: American Mathematical Soc.
ISBN: 1470420260
Category : Mathematics
Languages : en
Pages : 102

Get Book Here

Book Description
The authors solve a spectral and an inverse spectral problem arising in the computation of peakon solutions to the two-component PDE derived by Geng and Xue as a generalization of the Novikov and Degasperis-Procesi equations. Like the spectral problems for those equations, this one is of a "discrete cubic string" type, but presents some interesting novel features.