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Linear Functional Equations. Operator Approach

  • Book
  • © 1996

Overview

Authors:
  1. Anatolij Antonevich

    1. Department of Mathematics and Mechanics, Byelorussian State University, Minsk 50, Byelorussia

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Part of the book series: Operator Theory: Advances and Applications (OT, volume 83)

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Table of contents (6 chapters)

  1. Front Matter

    Pages i-viii
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  2. Introductory Material

    • Anatolij Antonevich
    Pages 1-15

  3. Functional Operators

    • Anatolij Antonevich
    Pages 17-48

  4. Banach Algebras Generated by Functional Operators

    • Anatolij Antonevich
    Pages 49-75

  5. Invertibility Conditions for Functional Operators. L2-Theory

    • Anatolij Antonevich
    Pages 77-105

  6. Functional Operators in Some Special Function Spaces

    • Anatolij Antonevich
    Pages 107-124

  7. Applications to Some Classes of Equations and Boundary Value Problems

    • Anatolij Antonevich
    Pages 125-158

  8. Back Matter

    Pages 159-179
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Keywords

About this book

In this book we shall study linear functional equations of the form m bu(x) == Lak(X)U(Qk(X)) = f(x), (1) k=l where U is an unknown function from a given space F(X) of functions on a set X, Qk: X -+ X are given mappings, ak and f are given functions. Our approach is based on the investigation of the operators given by the left-hand side of equa­ tion (1). In what follows such operators will be called functional operators. We will pay special attention to the spectral properties of functional operators, first of all, to invertibility and the Noether property. Since the set X, the space F(X), the mappings Qk and the coefficients ak are arbitrary, the class of operators of the form (1) is very rich and some of its individ­ ual representatives are related with problems arising in various areas of mathemat­ ics and its applications. In addition to the classical theory of functional equations, among such areas one can indicate the theory of functional-differential equations with deviating argument, the theory of nonlocal problems for partial differential equations, the theory of boundary value problems for the equation of a vibrating string and equations of mixed type, a number of problems of the general theory of operator algebras and the theory of dynamical systems, the spectral theory of au­ tomorphisms of Banach algebras, and other problems.

Authors and Affiliations

  • Department of Mathematics and Mechanics, Byelorussian State University, Minsk 50, Byelorussia

    Anatolij Antonevich

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