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Approximation of Additive Convolution-Like Operators

Real C*-Algebra Approach

  • Book
  • © 2008

Overview

Authors:
  1. Victor D. Didenko

    1. Department of Mathematics, University of Brunei Darussalam, Gadong BE, Brunei

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  2. Bernd Silbermann

    1. Fakultät für Mathematik, TU Chemnitz, Chemnitz, Germany

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    You can also search for this author in PubMed   Google Scholar

  • Based on algebraic techniques
  • First book entirely devoted to numerical analysis for additive operators
  • Covers various aspects of approximation methods for equations with conjugation arising in the boundary integral equation method
  • First book to present systematic study of approximation methods for the Muskhelishvili equation
  • Self-contained and accessible to graduate students
  • Includes supplementary material: sn.pub/extras

Part of the book series: Frontiers in Mathematics (FM)

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Table of contents (6 chapters)

  1. Front Matter

    Pages i-xii
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  2. Complex and Real Algebras

    Pages 1-58

  3. Approximation of Additive Integral Operators on Smooth Curves

    Pages 59-121

  4. Approximation Methods for the Riemann-Hilbert Problem

    Pages 123-155

  5. Piecewise Smooth and Open Contours

    Pages 157-231

  6. Approximation Methods for the Muskhelishvili Equation

    Pages 233-274

  7. Numerical Examples

    Pages 275-283

  8. Back Matter

    Pages 285-306
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Keywords

About this book

Various aspects of numerical analysis for equations arising in boundary integral equation methods have been the subject of several books published in the last 15 years [95, 102, 183, 196, 198]. Prominent examples include various classes of o- dimensional singular integral equations or equations related to single and double layer potentials. Usually, a mathematically rigorous foundation and error analysis for the approximate solution of such equations is by no means an easy task. One reason is the fact that boundary integral operators generally are neither integral operatorsof the formidentity plus compact operatornor identity plus an operator with a small norm. Consequently, existing standard theories for the numerical analysis of Fredholm integral equations of the second kind are not applicable. In the last 15 years it became clear that the Banach algebra technique is a powerful tool to analyze the stability problem for relevant approximation methods [102, 103, 183, 189]. The starting point for this approach is the observation that the ? stability problem is an invertibility problem in a certain BanachorC -algebra. As a rule, this algebra is very complicated – and one has to ?nd relevant subalgebras to use such tools as local principles and representation theory. However,invariousapplicationsthereoftenarisecontinuousoperatorsacting on complex Banach spaces that are not linear but only additive – i. e. , A(x+y)= Ax+Ay for all x,y from a given Banach space. It is easily seen that additive operators 1 are R-linear provided they are continuous.

Authors and Affiliations

  • Department of Mathematics, University of Brunei Darussalam, Gadong BE, Brunei

    Victor D. Didenko

  • Fakultät für Mathematik, TU Chemnitz, Chemnitz, Germany

    Bernd Silbermann

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