Results 11 to 20 of about 447,171 (274)

Smooth, Compact Operators [PDF]

Proceedings of the American Mathematical Society, 1979
It is a result of Holub’s [Math. Ann. 201 (1973), 157-163], that for T a compact operator on a real Hilbert space, T is smooth ⇔ ‖ T x 1 ‖ = ‖ T
openaire   +1 more source

Representing the Banach operator ideal of completely continuous operators; pp. 189–193 [PDF]

Proceedings of the Estonian Academy of Sciences, 2017
Let V ;W∞ and W be the operator ideals of completely continuous, weakly ∞-compact, and weakly compact operators, respectively. In a recent paper, William B. Johnson, Eve Oja, and the author proved that V = W∞ ◦W -1 (Johnson, W. B., Lillemets, R.,
Rauni Lillemets
doaj   +1 more source

Composition operator induced by ?(z) = sz + t for which |s|?1, |t|<1 and |s|+|t|?1

مجلة بغداد للعلوم, 2010
We study in this paper the composition operator that is induced by ?(z) = sz + t. We give a characterization of the adjoint of composiotion operators generated by self-maps of the unit ball of form ?(z) = sz + t for which |s|?1, |t|
Baghdad Science Journal
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A hyperbolic universal operator commuting with a compact operator [PDF]

, 2019
A Hilbert space operator is called universal (in the sense of Rota) if every operator on the Hilbert space is similar to a multiple of the restriction of the universal operator to one of its invariant subspaces.
Cowen, Carl C., Gallardo-Gutiérrez, Eva A.   +1 more
core   +1 more source

Properties of Fuzzy Compact Linear Operators on Fuzzy Normed Spaces

مجلة بغداد للعلوم, 2019
In this paper the definition of fuzzy normed space is recalled and its basic properties. Then the definition of fuzzy compact operator from fuzzy normed space into another fuzzy normed space is introduced after that the proof of an operator is fuzzy ...
Kider et al.
doaj   +1 more source

Extension of Compact Operators from DF-spaces to C(K) spaces

Applied General Topology, 2006
It is proved that every compact operator from a DF-space, closed subspace of another DF-space, into the space C(K) of continuous functions on a compact Hausdorff space K can be extended to a compact operator of the total DF-space.
Fernando Garibay Bonales, Rigoberto Vera Mendoza   +1 more
doaj   +1 more source

Operator p-compact mappings

Journal of Functional Analysis, 2019
22 ...
Javier Alejandro Chávez-Domínguez, Verónica Dimant, Daniel Galicer   +2 more
openaire   +4 more sources

Compact operators in TRO’s [PDF]

Proceedings of the American Mathematical Society, 2012
We give a geometric characterization of the elements of a TRO that can be represented as compact operators by a faithful representation of the TRO.
openaire   +2 more sources

Dissipative conformal measures on locally compact spaces [PDF]

, 2014
The paper introduces a general method to construct conformal measures for a local homeomorphism on a locally compact non-compact Hausdorff space, subject to mild irreducibility-like conditions.
Thomsen, Klaus
core   +1 more source

Operator amenability of Fourier-Stieltjes algebras [PDF]

, 2003
The notion of operator amenability was introduced by Z.-J. Ruan in 1995. He showed that a locally compact group G is amenable if and only if its Fourier algebra A(G) is operator amenable.
Runde, Volker, Spronk, Nico
core   +1 more source