Approximation Theory

Extension of bilinear operators and best approximation in 2-normed space

2 years ago

Abstract AuthorsStefan Cobzas Babes-Bolyai University Costica Mustata “Tiberiu Popoviciu” Institute of Numerical Analysis, Romanian Academy Keywords? Paper coordinatesŞt. Cobzaş, C.…

Approximation by spline functions of the solutions of a linear bilocal problem

2 years ago

Abstract AuthorsCostica Mustata “Tiberiu Popoviciu” Institute of Numerical Analysis, Romanian Academy, Romania Keywords? Paper coordinatesC. Mustăţa, Approximation by spline functions…

The approximation by spline functions of the solutions of a singularly perturbed bilocal problem

2 years ago

Abstract AuthorsCostica Mustata “Tiberiu Popoviciu” Institute of Numerical Analysis, Romanian Academy, Romania Adrian Muresan “Tiberiu Popoviciu” Institute of Numerical Analysis,…

Extension of bilinear functionals and best approximation in 2-normed space

2 years ago

Abstract The paper investigates the relations between the extension properties of bounded bilinear functionals and the approximation properties in 2-normed…

On the derivative-interpolating spline functions of even degree

2 years ago

Abstract AuthorsCostica Mustata “Tiberiu Popoviciu” Institute of Numerical Analysis, Romanian Academy, Romania Keywords? Paper coordinatesC. Mustăţa, On the derivative-interpolating spline…

A Galerkin Methods for a singularly perturbed bilocal problem

2 years ago

Abstract A bilocal singularly perturbed problem is solved using Galerkin’s method in a space in which the test functions are…

On a problem of B.A. Karpilovskaya

2 years ago

Abstract AuthorsCostica Mustata “Tiberiu Popoviciu” Institute of Numerical Analysis, Romanian Academy, Romania Keywords? Paper coordinatesC. Mustăţa, On a problem of…

The approximation by spline functions of the solution of a polylocal problem for a differential equation of order p

2 years ago

Abstract AuthorsCostică Mustăţa Department of Mathematics Babes-Bolyai University, Cluj-Napoca, Romania Keywords? Paper coordinatesC. Mustăţa, The approximation by spline functions of…

Extension of Lipschitz functions and best approximation

2 years ago

Abstract AuthorsCostica Mustata “Tiberiu Popoviciu” Institute of Numerical Analysis, Romanian Academy, Romania Keywords? Paper coordinatesC. Mustăţa, Şt. Cobzaş, Extension of…

Some remarks concerning norm preserving extension and best approximation

2 years ago

Abstract Let \(X,Y\) be two normed spaces, \(X_{1}\) a subspace of \(X\) and \(A:X\rightarrowY\) a continuous linear operator. Let us…

Approximation Theory

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