Search Results - "ROVNYAK, J"

On Nudel’man’s Problem and Indefinite Interpolation in the Generalized Schur and Nevanlinna Classes by Alpay, D., Dijksma, A., Rovnyak, J.

“…This work is a revised and corrected version of the authors’ joint paper with T. Constantinescu (Trans Am Math Soc 355:813–836, 2003). Some of the theorems…”
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Notes on interpolation in the generalized Schur class. II. Nudel'man's problem by ALPAY, D, CONSTANTINESCU, T, DIJKSMA, A, ROVNYAK, J

“…An indefinite generalization of Nudel'man's problem is used in a systematic approach to interpolation theorems for generalized Schur and Nevanlinna functions…”
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Some indefinite cases of spectral problems for canonical systems of difference equations by Rovnyak, J., Sakhnovich, L.A.

“…An approach by operator identities is used to investigate some direct and inverse problems of spectral theory for canonical systems of difference equations in…”
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SPECTRAL PROBLEMS FOR SOME INDEFINITE CASES OF CANONICAL DIFFERENTIAL EQUATIONS by ROVNYAK, J., SAKHNOVICH, L.A.

“…The method of operator identities is used to investigate inverse problems of spectral theory for canonical systems of differential equations in some indefinite…”
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Some Extensions of Loewner's Theory of Monotone Operator Functions by Alpay, D., Bolotnikov, V., Dijksma, A., Rovnyak, J.

“…Several extensions of Loewner's theory of monotone operator functions are given. These include a theorem on boundary interpolation for matrix-valued functions…”
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On the Preceding Paper by R. B. Leech by Kaashoek, M. A., Rovnyak, J.

“…The history of the paper by R. B. Leech, Factorization of analytic functions and operator inequalities , is described…”
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Loewner's theorem for kernels having a finite number of negative squares by Alpay, D., Rovnyak, J.

“…By a theorem of Loewner, a continuously differentiable real-valued function on a real interval whose difference quotient is a nonnegative kernel is the…”
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On Generalized Schwarz-Pick Estimates by Anderson, J. M., Rovnyak, J.

“…By Pick's invariant form of Schwarz's lemma, an analytic function B (z) which is bounded by one in the unit disk D = {z: |z| < 1} satisfies the inequality at…”
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Integral Representations for Generalized Difference Kernels Having a Finite Number of Negative Squares by Rovnyak, J., Sakhnovich, L. A.

“… An integral representation is derived for matrix-valued generalized difference kernels which have a finite number of negative squares. The representation is…”
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Contributions of a Mathematical Physicist by Rovnyak, James

“…Abstract only…”
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A plancherel theory for Newton spaces by Markett, C., Rosenblum, M., Rovnyak, J.

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Linear passive stationary scattering systems with Pontryagin state spaces by Arov, D. Z., Rovnyak, J., Saprikin, S. M.

“…Passive scattering systems having Pontryagin state spaces and their minimal conservative dilations are investigated. The transfer functions of passive…”
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Hilbert Space Extremal Problems with Constraints by Anderson, J. M., Rosenblum, M., Rovnyak, J.

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Some indefinite cases of spectral problems for canonical systems of difference equations: Special Issue on Structured and Infinite Systems of Linear Equations by ROVNYAK, J, SAKHNOVICH, L. A

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A Theorem of Beurling-sLax Type for Hilbert Spaces of Functions Analytic in the Unit Ball by Alpay, D., Dijksma, A., Rovnyak, J.

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Notes on Interpolation in the Generalized Schur Class. II. Nudel′man's Problem by Alpay, D., Constantinescu, T., Dijksma, A., Rovnyak, J.

“…An indefinite generalization of Nudel′man's problem is used in a systematic approach to interpolation theorems for generalized Schur and Nevanlinna functions…”
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Euler Spaces of Analytic Functions by Rovnyak, James

“…A formula due to Euler and Legendre is used to construct finite-difference counterparts to the Dirichlet space. The spaces have integral representations and…”
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Note on Characteristic Polynomials by Rovnyak, James

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Julia Operators and Complementation in Kreĭn Spaces by Dritschel, Michael A., Rovnyak, James

“…Operator methods are used to derive and in some ways extend the theory of complementation in Kreĭn spaces, especially in the direction of uniqueness questions…”
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On the theory of unbounded Toeplitz operators by Rovnyak, James

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