Results 301 to 310 of about 1,280,473 (359)

On Restriction Properties of Multiplication Operators

Zeitschrift für Analysis und ihre Anwendungen, 1999
A multiplication operator A acting in a rearrangement-invariant function space E is considered. Infinite dimensional subspaces X of E
Plichko, A., Shevchik, V.
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On the Similarity of Perturbed Multiplication Operators

Mathematical Notes, 2001
Consider the Banach space \(L_p(a,b)\) with arbitrary \(-\infty\leq ...
Griniv, R. O., Mikityuk, Ya. V.
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Multiplicity, calculuses, and multiplication operators

Siberian Mathematical Journal, 1988
See the review in Zbl 0648.47003.
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Bicommutants of Algebras of Multiplication Operators

Proceedings of the London Mathematical Society, 1996
The classical von Neumann bicommutant theorem states that if \(B\) is a unital self-adjoint closed subalgebra of operators on a Hilbert space, then the bicommutant of \(B\) coincides with the closure of \(B\) in the weak operator topology. This theorem has no direct counterpart for algebras of operators on a Banach space.
de Pagter, B., Ricker, W. J.
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MULTIPLE EIGENVALUES OF THE LAPLACE OPERATOR

Mathematics of the USSR-Sbornik, 1988
The estimates from above for the multiplicity of the eigenvalues of the Schrödinger operators on compact Riemannian two-dimensional manifolds are obtained. The paper contains also several examples illustrating the sharpness of the results.
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Multiplication operator on a matrix polynomial

Ukrainian Mathematical Journal, 1992
Summary: It is shown, how the study of the perturbed multiplication operator by a matrix polynomial in the space \(L_ 2(\mathbb{R},\mathbb{C}^ n)\) can be reduced to the study of the perturbed multiplication operator by the independent variable in the space \(L_ 2(\mathbb{R},\omega,\mathbb{C}^ n)\) with weight \(\omega\), fulfilling the Muckenhoupt ...
Mikityuk, Ya. V., Al'-Tundzhi, M.
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Convexity of the spectrum of a multiplication operator

The paper under review proves the following results: Each compact subset of the complex plane is the spectrum of a multiplication operator \(A\) on \(L^2(\nu)\), where \(\nu\) is the Lebesgue meaure on \(\mathbb{R}^2\) restricted on \(F\). Let \(C^*(A)\) be the \(C^*\)-algebra generated by \(A\). Then \(F\) is convex if and only if the pure state space
Heydari, Mohammad Taghi, Khademi, Seyyed Nematollah   +1 more
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Discrete analogue of generalized Hardy spaces and multiplication operators on homogenous trees

, 2016
In this article, we define discrete analogue of generalized Hardy spaces and its separable subspace on a homogenous rooted tree and study some of its properties such as completeness, inclusion relations with other spaces, separability, growth estimate ...
P. Muthukumar, S. Ponnusamy
semanticscholar   +1 more source

On Frame Properties of Iterates of a Multiplication Operator

Results in Mathematics, 2019
Z. A. Kasumov, A. Shukurov
semanticscholar   +1 more source

Cryptanalysis of multiple modes of operation

Journal of Cryptology, 1995
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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