A characterization of formally symmetric unbounded operators.

Jocić, Danko

Displaying similar documents to “A characterization of formally symmetric unbounded operators.”

$D$ -symmetric operators: comments and some open problems.

Mecheri, Salah (2008)

Banach Journal of Mathematical Analysis [electronic only]

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The Krein string and characteristic functions of non-self-adjoint operators.

Kostenko, A.S. (2005)

Zapiski Nauchnykh Seminarov POMI

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Generalized D-Symmetric Operators I

Bouali, S., Ech-chad, M. (2008)

Serdica Mathematical Journal

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2000 Mathematics Subject Classification: Primary: 47B47, 47B10; secondary 47A30. Let H be an infinite-dimensional complex Hilbert space and let A, B ∈ L(H), where L(H) is the algebra of operators on H into itself. Let δAB: L(H) → L(H) denote the generalized derivation δAB(X) = AX − XB. This note will initiate a study on the class of pairs (A,B) such that [‾(R(δAB))] = [‾(R(δB*A*))]; i.e. [‾(R(δAB))] is self-adjoint.

Generalized derivations and $C^{*}$ -algebras.

Mecheri, Salah (2009)

Analele Ştiinţifice ale Universităţii “Ovidius" Constanţa. Seria: Matematică

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Generalized resolvents and spectrum for a certain class of perturbed symmetric operators.

Hebbeche, A. (2005)

Journal of Applied Mathematics

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On the solution of Nevanlinna Pick problem with selfadjoint extensions of symmetric linear relations in Hilbert space.

El-Sabbagh, A.A. (1997)

International Journal of Mathematics and Mathematical Sciences

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A study of an operator arising in the theory of circular plates

Leopold Herrmann (1988)

Aplikace matematiky

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The operator $L_{0} : D_{L_{0}} \subset H \to H$ , $L_{0} u = \frac{1}{r} \frac{d}{d r} \{r \frac{d}{d r} [\frac{1}{r} \frac{d}{d r} (r \frac{d u}{d r})]\}$ , $D_{L_{0}} = {u \in C^{4} ([0, R]), u^{'} (0) = u^{''''} (0) = 0, u (R) = u^{'} (R) = 0}$ , $H = L_{2, r} (0, R)$ is shown to be essentially self-adjoint, positive definite with a compact resolvent. The conditions on $L_{0}$ (in fact, on a general symmetric operator) are given so as to justify the application of the Fourier method for solving the problems of the types $L_{0} u = g$ and $u_{t t} + L_{0} u = g$ , respectively.

Displaying similar documents to “A characterization of formally symmetric unbounded operators.”

D -symmetric operators: comments and some open problems.

The Krein string and characteristic functions of non-self-adjoint operators.

Generalized D-Symmetric Operators I

Generalized derivations and C * -algebras.

Generalized resolvents and spectrum for a certain class of perturbed symmetric operators.

On the solution of Nevanlinna Pick problem with selfadjoint extensions of symmetric linear relations in Hilbert space.

A study of an operator arising in the theory of circular plates

$D$ -symmetric operators: comments and some open problems.

Generalized derivations and $C^{*}$ -algebras.