Approximation Theory

Inverse interpolating splines with applications to the equation solving

2 years ago

Abstract AuthorsCrăciun Iancu Tiberiu Popoviciu Institute of Numerical Analysis Romania Academy, Cluj-Napoca, Romania Tiberiu Oproiu Romanian Academy Astronomical Observatory Ion…

An extension of the Cheney-Sharma operator of the first kind

2 years ago

Abstract AuthorsTeodora Cătinaș Babeș-Bolyai University, Faculty of Mathematics and Computer Science, Cluj-Napoca, Romania Iulia Buda Babeș-Bolyai University, Faculty of Mathematics…

Theory and computation of radial solutions for Neumann problems with φ-Laplacian

2 years ago

Abstract The paper deals with existence, localization and multiplicity of radial positive solutions in the annulus or the ball, for…

Spherical interpolation of scattered data using least squares thin-plate spline and inverse multiquadric functions

2 years ago

Abstract We construct some smooth functions defined over a sphere that interpolate large sets of scattered data, using some modified…

On the iterates of uni- and multidimensional operators

2 years ago

Abstract The problem of the convergence of the iterates of operators or of a sequence of operators is discussed in…

Păltănea’s operators: old and new results

2 years ago

Abstract This note concerns the study of an approximation linear positive process introduced by R. Paltanea in 2008. Considering the…

Iterative Shepard operator of least squares thin-plate spline type

2 years ago

AbstractWe propose a modified bivariate Shepard operator of least squares thin-plate spline type based on an iterative method, introduced by…

On Wachnicki’s Generalization of the Gauss–Weierstrass Integral

2 years ago

Abstract The paper aims at a generalization of the Gauss–Weierstrass integral introduced by Eugeniusz Wachnicki two decades ago. It is…

On the Chebyshev subspaces in normed space of Lipschitz functions

2 years ago

Original title (in Romanian)Asupra unor subspații cebâșeviene din spațiul normat al funcțiilor lipschitziene Abstract AuthorsCostica Mustata “Tiberiu Popoviciu” Institute of…

On the uniqueness of the extension of continuous p-seminorms

2 years ago

Original title (in Romanian)Asupra unicității prelungirii p-seminormelor continue Abstract AuthorsCostica Mustata “Tiberiu Popoviciu” Institute of Numerical Analysis, Romanian Academy, Romania…

Approximation Theory

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