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Abstract Korovkin-type theorems in modular spaces and applications

Carlo Bardaro, Antonio Boccuto, Xenofon Dimitriou, Ilaria Mantellini (2013)

Open Mathematics

We prove some versions of abstract Korovkin-type theorems in modular function spaces, with respect to filter convergence for linear positive operators, by considering several kinds of test functions. We give some results with respect to an axiomatic convergence, including almost convergence. An extension to non positive operators is also studied. Finally, we give some examples and applications to moment and bivariate Kantorovich-type operators, showing that our results are proper extensions of the...

Accelerating the Convergence of a Table with Multiple Entry

A.A.M. Cuyt (1983)

Numerische Mathematik

Accelerating the Convergence of Power Series of Certain Entire Functions.

Paul Wild (1987)

Numerische Mathematik

Accretive metric projections.

Veselý, L. (1991)

Acta Mathematica Universitatis Comenianae. New Series

Accuracy of Several Multidimensional Refinable Distributions.

C. Heil, C. Cabrelli, U. Molter (2000)

The journal of Fourier analysis and applications [[Elektronische Ressource]]

Adaptive convex optimization in Banach spaces: a multilevel approach

Claudio Canuto (2003)

Bollettino dell'Unione Matematica Italiana

This is mainly a review paper, concerned with some applications of the concept of Nonlinear Approximation to adaptive convex minimization. At first, we recall the basic ideas and we compare linear to nonlinear approximation for three relevant families of bases used in practice: Fourier bases, finite element bases, wavelet bases. Next, we show how nonlinear approximation can be used to design rigorously justified and optimally efficient adaptive methods to solve abstract minimization problems in...

Adaptive methods of numerical quadrature [Abstract of thesis]

F. Němec (1990)

Commentationes Mathematicae Universitatis Carolinae

Adhérence faible étoile d'algèbres de fractions rationnelles

Jacques Chaumat (1974)

Annales de l'institut Fourier

Étant donnés un compact $K$ du plan complexe, et une mesure non nulle sur $K$ , on étudie $H^{\infty} (μ)$ , l’adhérence dans $L^{\infty} (μ)$ , pour la topologie $σ (L^{\infty} (μ), L^{1} (μ))$ , de l’algèbre des fractions rationnelles d’une variable complexe, à pôles hors de $K$ . Le résultat principal obtenu est qu’il existe un sous-ensemble $E_{μ}$ de $K$ , éventuellement vide, mesurable pour la mesure de Lebesgue plane, et une mesure $μ_{s}$ , éventuellement nulle, absolument continue par rapport à la mesure $μ$ , tels que : $H^{\infty} (μ)$ soit isométriquement isomorphe à $H^{\infty} (λ_{E_{μ}}) \oplus L^{\infty} (μ_{s})$ , où $λ_{E_{μ}}$ désigne la...

Algebraische Analysis [Book]

Augustin Louis Cauchy, Carl Itzigsohn (1885)

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Displaying 201 – 220 of 2607

Abstract Korovkin-type theorems in modular spaces and applications

Accelerating the Convergence of a Table with Multiple Entry

Accelerating the Convergence of Power Series of Certain Entire Functions.

Accretive metric projections.

Accuracy of Several Multidimensional Refinable Distributions.

Adaptive convex optimization in Banach spaces: a multilevel approach

Adaptive methods of numerical quadrature [Abstract of thesis]

Adhérence faible étoile d'algèbres de fractions rationnelles

Adjoint domains and generalized splines

Admissible functions and asymptotics for labelled structures by number of components.

Admissible Slopes for Monotone and Convex Interpolation.

Affine Systems in L...(...) II: Dual Systems.

Algebraically solvable problems: describing polynomials as equivalent to explicit solutions.

Algebraische Analysis [Book]

Algorithm 46. Determination of an interpolating quadratic spline function

Algorithm 50. Joining of Chebyshev series

Algorithms 70-71. Determination of a quadratic spline function with given values of the integrals in subintervals

Algorithms 73-76. Four algorithms for evaluation of improper integrals

Algorithms 77-78. Uniform approximation of empirical functions being either monotone or having a fixed number of extrema

Algorithms for cardinal interpolation using box splines and radial basis functions.

Currently displaying 201 – 220 of 2607