Condensation principles with rates
Conditionality constants of quasi-greedy bases in super-reflexive Banach spaces
We show that in a super-reflexive Banach space, the conditionality constants of a quasi-greedy basis ℬ grow at most like for some 0 < ε < 1. This extends results by the third-named author and Wojtaszczyk (2014), where this property was shown for quasi-greedy bases in for 1 < p < ∞. We also give an example of a quasi-greedy basis ℬ in a reflexive Banach space with .
Conditions for regular -spline curves and surfaces
Conjuntos estrictamente aproximadamente compactos en un espacio normado.
Constants of strong uniqueness of minimal norm-one projections
In this paper we calculate the constants of strong uniqueness of minimal norm-one projections on subspaces of codimension k in the space . This generalizes a main result of W. Odyniec and M. P. Prophet [J. Approx. Theory 145 (2007), 111-121]. We applied in our proof Kolmogorov’s type theorem (see A. Wójcik [Approximation and Function Spaces (Gdańsk, 1979), PWN, Warszawa / North-Holland, Amsterdam, 1981, 854-866]) for strongly unique best approximation.
Construction de bases d'ondelettes α-höldériennes.
Dans cet article, nous reprenons une méthode due à Ingrid Daubechies pour générer des bases orthonormales de fonctions dans L2(R) de la forme {2j/2 ψ (2jx - k)}j,k ∈ Z à partir de filtres miroir en quadrature (QMF) tels que l'ondelette ψ ait de bonnes propriétés de régularité. Une estimation de l'exposant de Hölder global optimal est obtenue en caractérisant précisément la decroissance de la fonction ψ'. Nous précisons finalement les liens exacts entre la régularité de l'ondelette et son ordre de...
Construction of cubature formulas by using linear positive operators.
Construction of Cubature Formulas of Degree Eleven for Symmetric Planar Regions "Using" Orthogonal Polynomials.
Construction of ECT-B-splines, a survey.
Construction of non separable dyadic compactly supported orthonormal wavelet bases for L2(R2) of arbitrarily high regularity.
By means of simple computations, we construct new classes of non separable QMF's. Some of these QMF's will lead to non separable dyadic compactly supported orthonormal wavelet bases for L2(R2) of arbitrarily high regularity.
Construction of Stancu-Hurwitz operator for two variables.
Construction of surface spline interpolants of scattered data over finite domains
Constructions of interpolation curves from given supporting elements. I
This paper deals with the constructions of interpolation curves which pass through given supporting points (nodes) and touch supporting tangent vectors given at only some fo these points or, as the case may be, at all these points. The mathematical kernel of these constructions is based on Lienhard's interpolation method.
Constructions of interpolation curves from given supporting elements. II
This paper deals with the constructions of interpolation curves which pass through given supporting points (nodes) and touch supporting tangent vectors given at only some of these points or, as the case may be, at all these points. The mathematical kernel of these constructions is based on the Lienhard's interpolation method. Formulae for the curvature of plane and space interpolation curves are derived.
Constructive and non-constructive methods of proofs of irrationality and transcendency and algebraic independence of periods of abelian varieties
Constructive Characterization of A-Stable Approximations to exp(z) and Its Connection with Algebraically Stable Runge-Kutta Methods.
Constructive function theory and spline systems
Constructive function theory on sets of the complex plane through potential theory and geometric function theory.
Containing l1 or c0 and best approximation.
The purpose of this paper is to obtain sufficient conditions, for a Banach space X to contain or exclude c0 or l1, in terms of the sets of best approximants in X for the elements in the bidual space.
Continous Norms on Locally Convex Strict Inductive Limit Spaces.