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Stability of Operators and Operator Semigroups

Stability of Operators and Operator Semigroups PDF Author: Tanja Eisner
Publisher: Birkhäuser
ISBN: 3034601956
Category : Mathematics
Languages : en
Pages : 208

Book Description
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.

Stability of Operators and Operator Semigroups

Stability of Operators and Operator Semigroups PDF Author: Tanja Eisner
Publisher: Birkhäuser
ISBN: 3034601956
Category : Mathematics
Languages : en
Pages : 208

Book Description
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.

Nigel J. Kalton Selecta

Nigel J. Kalton Selecta PDF Author: Fritz Gesztesy
Publisher: Birkhäuser
ISBN: 3319187961
Category : Mathematics
Languages : en
Pages : 769

Book Description
This book is the first part of a two volume anthology comprising a selection of 49 articles that illustrate the depth, breadth and scope of Nigel Kalton’s research. Each article is accompanied by comments from an expert on the respective topic, which serves to situate the article in its proper context, to successfully link past, present and hopefully future developments of the theory, and to help readers grasp the extent of Kalton’s accomplishments. Kalton’s work represents a bridge to the mathematics of tomorrow, and this book will help readers to cross it. Nigel Kalton (1946-2010) was an extraordinary mathematician who made major contributions to an amazingly diverse range of fields over the course of his career.

Mathematical Reviews

Mathematical Reviews PDF Author:
Publisher:
ISBN:
Category : Mathematics
Languages : en
Pages : 1052

Book Description


The Functional Calculus for Sectorial Operators

The Functional Calculus for Sectorial Operators PDF Author: Markus Haase
Publisher: Springer Science & Business Media
ISBN: 3764376988
Category : Mathematics
Languages : en
Pages : 399

Book Description
This book contains a systematic and partly axiomatic treatment of the holomorphic functional calculus for unbounded sectorial operators. The account is generic so that it can be used to construct and interrelate holomorphic functional calculi for other types of unbounded operators. Particularly, an elegant unified approach to holomorphic semigroups is obtained. The last chapter describes applications to PDE, evolution equations and approximation theory as well as the connection with harmonic analysis.

Convergence of Iterations for Linear Equations

Convergence of Iterations for Linear Equations PDF Author: Olavi Nevanlinna
Publisher: Birkhäuser
ISBN: 3034885474
Category : Science
Languages : en
Pages : 187

Book Description
Assume that after preconditioning we are given a fixed point problem x = Lx + f (*) where L is a bounded linear operator which is not assumed to be symmetric and f is a given vector. The book discusses the convergence of Krylov subspace methods for solving fixed point problems (*), and focuses on the dynamical aspects of the iteration processes. For example, there are many similarities between the evolution of a Krylov subspace process and that of linear operator semigroups, in particular in the beginning of the iteration. A lifespan of an iteration might typically start with a fast but slowing phase. Such a behavior is sublinear in nature, and is essentially independent of whether the problem is singular or not. Then, for nonsingular problems, the iteration might run with a linear speed before a possible superlinear phase. All these phases are based on different mathematical mechanisms which the book outlines. The goal is to know how to precondition effectively, both in the case of "numerical linear algebra" (where one usually thinks of first fixing a finite dimensional problem to be solved) and in function spaces where the "preconditioning" corresponds to software which approximately solves the original problem.

Wave and Scattering Methods for Numerical Simulation

Wave and Scattering Methods for Numerical Simulation PDF Author: Stefan Bilbao
Publisher: John Wiley & Sons
ISBN: 0470870184
Category : Science
Languages : en
Pages : 380

Book Description
Scattering-based numerical methods are increasingly applied to the numerical simulation of distributed time-dependent physical systems. These methods, which possess excellent stability and stability verification properties, have appeared in various guises as the transmission line matrix (TLM) method, multidimensional wave digital (MDWD) filtering and digital waveguide (DWN) methods. This text provides a unified framework for all of these techniques and addresses the question of how they are related to more standard numerical simulation techniques. Covering circuit/scattering models in electromagnetics, transmission line modelling, elastic dynamics, as well as time-varying and nonlinear systems, this book highlights the general applicability of this technique across a variety of disciplines, as well as the inter-relationships between simulation techniques and digital filter design. provides a comprehensive overview of scattering-based numerical integration methods. reviews the basics of classical electrical network theory, wave digital filters, and digital waveguide networks. discusses applications for time-varying and nonlinear systems. includes an extensive bibliography containing over 250 references. Mixing theory and application with numerical simulation results, this book will be suitable for both experts and readers with a limited background in signal processing and numerical techniques.

A Short Course on Operator Semigroups

A Short Course on Operator Semigroups PDF Author: Klaus-Jochen Engel
Publisher: Springer Science & Business Media
ISBN: 0387313419
Category : Mathematics
Languages : en
Pages : 257

Book Description
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.

Quasi-hydrodynamic Semiconductor Equations

Quasi-hydrodynamic Semiconductor Equations PDF Author: Ansgar Jüngel
Publisher: Birkhäuser
ISBN: 303488334X
Category : Mathematics
Languages : en
Pages : 301

Book Description
This book presents a hierarchy of macroscopic models for semiconductor devices, studying three classes of models in detail: isentropic drift-diffusion equations, energy-transport models, and quantum hydrodynamic equations. The derivation of each, including physical discussions, is shown. Numerical simulations for modern semiconductor devices are performed, showing the particular features of each. The author develops modern analytical techniques, such as positive solution methods, local energy methods for free-boundary problems and entropy methods.

Treatise on the Shift Operator

Treatise on the Shift Operator PDF Author: N.K. Nikol'skii
Publisher: Springer Science & Business Media
ISBN: 3642701515
Category : Mathematics
Languages : en
Pages : 496

Book Description
This book is an elementary introduction to non-classical spectral theory. Mter the basic definitions and a reduction to the study of the functional model the discussion will be centered around the simplest variant of such a model which, formally speaking, comprises only the class of contraction operators with a one dimensional rank of non-unitarity (rank(I - T*T) = rank(I - TT*) = 1). The main emphasis is on the technical side of the subject, the book being mostly devoted to a development of the analytical machinery of spectral theory rather than to this discipline itself. The functional model of Sz. -Nagy and Foia§ re duces the study of general operators to an investigation of the . compression T=PSIK of the shift operator S, Sf = zf, onto coinvariant subspaces (i. e. subspaces in variant with respect to the adjoint shift S*). In the main body of the book (the "Lectures" in the proper meaning of the word) this operator acts on the Hardy space H2 and is itself a part of the operator of multiplication by the independent variable in the space L2 (in the case at hand L2 means L2(lf), If being the unit circle), this operator again being fundamental for classical spectral theory.

New Dictionary of the History of Ideas

New Dictionary of the History of Ideas PDF Author: Maryanne Cline Horowitz
Publisher:
ISBN:
Category : Civilization
Languages : en
Pages : 2780

Book Description