Results 21 to 30 of about 481,322 (128)
On Spectral Approximations of Unbounded Operators [PDF]
Complex Analysis and Operator Theory, 2019 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Marian Dmytryshyn, Oleh Lopushansky
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The induced generalized OWA operator (WP) [PDF]
, 2013 [spa] Se presenta el operador OWA generalizado inducido (IGOWA). Es un nuevo operador de agregación que generaliza al operador OWA a través de utilizar las principales características de dos operadores muy conocidos como son el operador OWA generalizado ...
Merigó Lindahl, José M. +1 more
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On the simplicial cohomology of Banach operator algebras
, 2011 We investigate the simplicial cohomology of certain Banach operator algebras. The two main examples considered are the Banach algebra of all bounded operators on a Banach space and its ideal of approximable operators.
Blanco, Ariel, A. Blanco
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Operator Methods in Approximation Theory [PDF]
Journal of Function Spaces, 2019 n ...
Vita Leonessa +3 more
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Discrete Approximation of Unbounded Operators and Approximation of their Spectra
Journal of Approximation Theory, 2001 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Regainingly approximable numbers and sets [PDF]
We call an $\alpha \in \mathbb{R}$ regainingly approximable if there exists a computable nondecreasing sequence $(a_n)_n$ of rational numbers converging to $\alpha$ with $\alpha - a_n < 2^{-n}$ for infinitely many $n \in \mathbb{N}$.
Hölzl, Rupert +3 more
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Approximation by Choquet integral operators [PDF]
Annali di Matematica Pura ed Applicata (1923 -), 2015 The main aim of this paper is to show that the nonlinear Choquet integral can be used to construct nonlinear approximation operators, exactly as by the use in probability of the Lebesgue-type integral, linear and positive approximation operators are constructed.
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Uniform Approximation by Nevai Operators
Journal of Approximation Theory, 2002 The author investigate the Nevai operator \(N_n\) interpolating a function \(f\) on \([-1,1]\) in the more general weighted approximation case, when \(f\) may be unbounded at \(\pm 1\). It is shown that, similarly as for polynomials, the weighted convergence for the operators \(N_n\) with Pollaczek type weights is not guaranteed in general.
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Ideals of operators, approximability in the strong operator topology, and the approximation property
Michigan Mathematical Journal, 2004 The authors give characterisations of the approximation property of a Banach space \(X\) or its dual in terms of pointwise approximability of weakly compact operators by finite rank operators. One of their results says that \(X^*\) has the approximation property if and only if for every Banach space \(Z\) and every weakly compact operator \(T: Z\to X\)
Lima, Åsvald, Oja, Eve
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Approximable W A P and L U C- interpolation sets [PDF]
, 2013 Extending and unifying concepts extensively used in the literature, we introduce the notion of approximable interpolation sets for algebras of functions on locally compact groups, especially for weakly almost periodic functions and for uniformly ...
Filali, M., Galindo, Jorge
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