Titlebook: Operator Theory and Analysis; The M.A. Kaashoek An H. Bart,A. C. M. Ran,I. Gohberg Conference proceedings 2001 Springer Basel AG 2001 Hilbe

不法行为

Contend

Some Remarks on the Inverse Monodromy Problem for 2 x 2 Canonical Differential Systems,ifferential equations with a sym-plectic monodromy matrix which is inner with respect to the signature matrix . In this paper, this theorem is used to show that the inverse monodromy problem for such sys ems of equations has a unique normalized solution for monodromy matrices which are .-inner with

有花

Interpolation and Commutant Lifting for Multipliers on Reproducing Kernel Hilbert Spaces, ℌ... of analytic functions on the d-dimensional complex unit ball with reproducing kernel .. (.) = 1/(1 — (.)). More generally, if . is a positive kernel on a set Ω such that 1/. has 1 positive square, then there is an embedding . of Ω into the ball B. (where . is the number of negative squares of

Contend

Generalized Nevanlinna Functions with Polynomial Asymptotic Behaviour at Infinity and Regular Pertuve squares. The class .. plays an important role in the extension theory of symmetric operators . acting on Pontryagin spaces. The additional assumption that one of the so-called Q-functions . of . has the asymptotic behaviour Q(.) = . as.with . a real polynomial, gives rise to a model, where the se

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掺和

贪婪性

Generalized Bezoutian, Factorization of Rational Matrix Functions and Matrix Quadratic Equations,these Bezoutians one can describe that precise nature of the well-known correspondence between solution of matrix quadratic equations (descrete and continuous) and factorization of certain associated rational matrix functions.

gene-therapy

A Note on Factorization of Analytic Matrix Functions,.(λ) with . inside Γ. Defining . ind..(λ) . 0, we give new proofs of the existence of spectral divisors of .(λ.) with respect toΓin the cases that either . 1 or Γ is a circle and, in both cases, there is no completeness hypothesis. Other results on the existence of Γ-spectral divisors (using com­ple

有毛就脱毛

射手座

Stability of Pseudospectral Factorizations,ctral factorizations is considered. Within the class, stable factorizations, i.e., those that persist after a small perturbation of a minimal realization of the original function, are fully described. The description is based on stability results concerning semidefinite invariant subspaces of dissip