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Constructive Methods of Wiener-Hopf Factorization
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Constructive Methods of Wiener-Hopf Factorization (Hardback)

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Synopsis

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 . * [1]. 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.

Science & MathematicsMathematicsAlgebraScience & MathematicsMathematicsCalculus & mathematical analysisCalculusScience & MathematicsMathematicsCalculus & mathematical analysisCalculus of variations Publisher: Birkhauser Verlag AG Publication Date: 01/01/1986 ISBN-13: 9783764318260  Details: Type: Hardback Format: Books
Availability: Unavailable. This title is Out of Print.  

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