Topics In Operator Semigroups
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Topics in Operator Semigroups
Author | : Shmuel Kantorovitz |
Publsiher | : Springer Science & Business Media |
Total Pages | : 266 |
Release | : 2009-10-22 |
Genre | : Mathematics |
ISBN | : 9780817649326 |
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This monograph is concerned with the interplay between the theory of operator semigroups and spectral theory. The basics on operator semigroups are concisely covered in this self-contained text. Part I deals with the Hille--Yosida and Lumer--Phillips characterizations of semigroup generators, the Trotter--Kato approximation theorem, Kato’s unified treatment of the exponential formula and the Trotter product formula, the Hille--Phillips perturbation theorem, and Stone’s representation of unitary semigroups. Part II explores generalizations of spectral theory’s connection to operator semigroups.
A Short Course on Operator Semigroups
Author | : Klaus-Jochen Engel,Rainer Nagel |
Publsiher | : Springer Science & Business Media |
Total Pages | : 257 |
Release | : 2006-06-06 |
Genre | : Mathematics |
ISBN | : 9780387313412 |
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The book offers a direct and up-to-date introduction to the theory of one-parameter semigroups of linear operators on Banach spaces. The book is intended for students and researchers who want to become acquainted with the concept of semigroups.
Groupoids Inverse Semigroups and their Operator Algebras
Author | : Alan Paterson |
Publsiher | : Springer Science & Business Media |
Total Pages | : 286 |
Release | : 2012-12-06 |
Genre | : Mathematics |
ISBN | : 9781461217749 |
Download Groupoids Inverse Semigroups and their Operator Algebras Book in PDF, Epub and Kindle
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.
Stability of Operators and Operator Semigroups
Author | : Tanja Eisner |
Publsiher | : Birkhäuser |
Total Pages | : 208 |
Release | : 2019-10-01 |
Genre | : Mathematics |
ISBN | : 9783034601955 |
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The asymptotic behaviour, in particular "stability" in some sense, is studied systematically for discrete and for continuous linear dynamical systems on Banach spaces. Of particular concern is convergence to an equilibrium with respect to various topologies. Parallels and differences between the discrete and the continuous situation are emphasised.
Positive Operator Semigroups
Author | : András Bátkai,Marjeta Kramar Fijavž,Abdelaziz Rhandi |
Publsiher | : Birkhäuser |
Total Pages | : 364 |
Release | : 2017-02-13 |
Genre | : Mathematics |
ISBN | : 9783319428130 |
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This book gives a gentle but up-to-date introduction into the theory of operator semigroups (or linear dynamical systems), which can be used with great success to describe the dynamics of complicated phenomena arising in many applications. Positivity is a property which naturally appears in physical, chemical, biological or economic processes. It adds a beautiful and far reaching mathematical structure to the dynamical systems and operators describing these processes. In the first part, the finite dimensional theory in a coordinate-free way is developed, which is difficult to find in literature. This is a good opportunity to present the main ideas of the Perron-Frobenius theory in a way which can be used in the infinite dimensional situation. Applications to graph matrices, age structured population models and economic models are discussed. The infinite dimensional theory of positive operator semigroups with their spectral and asymptotic theory is developed in the second part. Recent applications illustrate the theory, like population equations, neutron transport theory, delay equations or flows in networks. Each chapter is accompanied by a large set of exercises. An up-to-date bibliography and a detailed subject index help the interested reader. The book is intended primarily for graduate and master students. The finite dimensional part, however, can be followed by an advanced bachelor with a solid knowledge of linear algebra and calculus.
Operator Semigroups Meet Complex Analysis Harmonic Analysis and Mathematical Physics
Author | : Wolfgang Arendt,Ralph Chill,Yuri Tomilov |
Publsiher | : Birkhäuser |
Total Pages | : 496 |
Release | : 2015-12-10 |
Genre | : Mathematics |
ISBN | : 9783319184944 |
Download Operator Semigroups Meet Complex Analysis Harmonic Analysis and Mathematical Physics Book in PDF, Epub and Kindle
This proceedings volume originates from a conference held in Herrnhut in June 2013. It provides unique insights into the power of abstract methods and techniques in dealing successfully with numerous applications stemming from classical analysis and mathematical physics. The book features diverse topics in the area of operator semigroups, including partial differential equations, martingale and Hilbert transforms, Banach and von Neumann algebras, Schrödinger operators, maximal regularity and Fourier multipliers, interpolation, operator-theoretical problems (concerning generation, perturbation and dilation, for example), and various qualitative and quantitative Tauberian theorems with a focus on transfinite induction and magics of Cantor. The last fifteen years have seen the dawn of a new era for semigroup theory with the emphasis on applications of abstract results, often unexpected and far removed from traditional ones. The aim of the conference was to bring together prominent experts in the field of modern semigroup theory, harmonic analysis, complex analysis and mathematical physics, and to present the lively interactions between all of those areas and beyond. In addition, the meeting honored the sixtieth anniversary of Prof C. J. K. Batty, whose scientific achievements are an impressive illustration of the conference goal. These proceedings present contributions by prominent scientists at this international conference, which became a landmark event. They will be a valuable and inspiring source of information for graduate students and established researchers.
Observation and Control for Operator Semigroups
Author | : Marius Tucsnak,George Weiss |
Publsiher | : Springer Science & Business Media |
Total Pages | : 488 |
Release | : 2009-03-13 |
Genre | : Mathematics |
ISBN | : 9783764389932 |
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This book studies observation and control operators for linear systems where the free evolution of the state can be described by an operator semigroup on a Hilbert space. It includes a large number of examples coming mostly from partial differential equations.