Exaggerate
发表于 2025-3-25 04:53:13
The Central Method for Positive Semi-Definite, Contractive and Strong Parrott Type Completion Probloperator matrix. As applications we obtain a cascade transform parametrization for the set of all contractive completions of a triangular partial operator matrix satisfying possibly an extra linear constraint (thus extending the results on the Strong Parrott problem). In each of the problems also a
Spartan
发表于 2025-3-25 07:52:52
Interpolation by Rational Matrix Functions and Stability of Feedback Systems: The 4-Block Case, and right, as well as a collection of infinite order directional interpolation conditions on both sides. We set down consistency requirements for solutions to exist as well as a normalization procedure to make the conditions independent, and show how the general standard problem of .. control fits
吸气
发表于 2025-3-25 14:07:23
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Androgen
发表于 2025-3-25 18:05:34
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DUST
发表于 2025-3-25 20:28:21
Interpolating Sequences in the Maximal Ideal Space of ,, II,on gave a characterization of interpolating sequences in . the open unit disk. But its condition does not characterize interpolating sequences in .(..). Carleson’s condition has several equivalent conditions in .. It is studied the relations between these conditions and interpolating sequences in .(
排斥
发表于 2025-3-26 02:34:36
Operator Matrices with Chordal Inverse Patterns,e describe a) block entry formulae that express certain blocks (in particular, those corresponding to 0 blocks in the inverse) in terms of others, under a regularity condition, and b) in the Hermitian case, a formula for the inertia in terms of inertias of certain key blocks.
Wordlist
发表于 2025-3-26 08:06:12
The von Neumann Inequality and Dilation Theorems for Contractions,uality “in the strong sense”, each .. double commutes with every .., and, .., …, .. generate a nuclear ..-algebra, then the set .., …, .., .., …, .. satisfies the von Neumann inequality “in the strong sense”. This gives a new condition for a set of contractions to admit a simultaneous strong unitary
表否定
发表于 2025-3-26 11:52:13
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incubus
发表于 2025-3-26 12:46:39
Accretive Extensions and Problems on the Stieltjes Operator-Valued Functions Relations,ion of a Stieltjes-type operator-valued function as a linear fractional transformation of the transfer operator-function of a conservative system. We give criteria of existence, together with some properties and a complete description of a positive operator.
SUGAR
发表于 2025-3-26 16:56:50
Commuting Nonselfadjoint Operators and Algebraic Curves,er geometrical ideas, we construct triangular models for pairs of commuting nonselfadjoint operators with finite-dimensional imaginary parts and a smooth discriminant curve. The characteristic function of a pair of commuting nonselfadjoint operators turns out to be a function on the discriminant cur