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# Catalogue Display

## Constructive Methods of Wiener-Hopf Factorization  .
Catalogue Information
Field name Details
Dewey Class 515
Title Constructive Methods of Wiener-Hopf Factorization ([EBook]) / edited by I. Gohberg, M. A. Kaashoek.
Added Personal Name Gohberg, Israel , 1928-2009
Kaashoek, M. A.
Publication Basel : Birkhäuser , 1986.
Physical Details XII, 410 pages : online resource.
Series OT 21: Operator Theory: Advances and Applications ; 21
ISBN 9783034874182
Summary Note The main part of this paper concerns Toeplitz operators of which the symbol W is an m x m matrix function defined on a disconnected curve r. The curve r is assumed to be the union of s + 1 nonintersecting simple smooth closed contours rOo r •. . . • rs which form the positively l oriented boundary of a finitely connected bounded domain in t. Our main requirement on the symbol W is that on each contour rj the function W is the restriction of a rational matrix function Wj which does not have poles and zeros on rj and at infinity. Using the realization theorem from system theory (see. e. g . • . Chapter 2) the rational matrix function Wj (which differs from contour to contour) may be written in the form 1 (0. 1) W . (A) = I + C. (A - A. f B. A E r· J J J J J where Aj is a square matrix of size nj x n• say. B and C are j j j matrices of sizes n. x m and m x n . • respectively. and the matrices A. J x J J and Aj = Aj - BjC have no eigenvalues on r . (In (0. 1) the functions j j Wj are normalized to I at infinity.:
Contents note I: Canonical and Minimal Factorization -- Editorial introduction -- Left Versus Right Canonical Factorization -- Wiener-Hopf Equations With Symbols Analytic In A Strip -- On Toeplitz and Wiener-Hopf Operators with Contour-Wise Rational Matrix and Operator Symbols -- Canonical Pseudo-Spectral Factorization and Wiener-Hopf Integral Equations -- Minimal Factorization of Integral operators and Cascade Decompositions of Systems -- II: Non-Canonical Wiener-Hopf Factorization -- Editorial introduction -- Explicit Wiener-Hopf Factorization and Realization -- Invariants for Wiener-Hopf Equivalence of Analytic Operator Functions -- Multiplication by Diagonals and Reduction to Canonical Factorization -- Symmetric Wiener-Hopf Factorization of Self-Adjoint Rational Matrix Functions and Realization.
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Internet Site http://dx.doi.org/10.1007/978-3-0348-7418-2