Approximation de contours convexes par des splines paramétrées périodiques convexes , quadratiques ou cubiques
Approximation of an elliptic boundary value problem with unilateral constraints
Approximation of Gaussian by scaling functions and biorthogonal scaling polynomials.
Approximation of solutions of nonlinear initial-value problems by B-spline functions
This note is motivated by [GGG], where an algorithm finding functions close to solutions of a given initial value-problem has been proposed (this algorithm has been recalled in Theorem 2.2). In this paper we present a commonly used definition and basic facts concerning B-spline functions and use them to improve the mentioned algorithm. This leads us to a better estimate of the Cauchy problem solution under some additional assumption on f appearing in the Cauchy problem. We also estimate the accuracy...
Approximation Power of Smooth Bivariate PP Functions.
Approximation spline de l'analyse en composantes principales d'une variable aléatoire hilbertienne
Attenuation Factors in Multivariate Fourier Analysis.