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Best approximation in spaces with asymmetric norm

3 years ago

Abstract In this paper we shall present some results on spaces with asymmetric seminorms, with emphasis on best approximation problems…

On the converses of the reduction principle in inner product spaces

3 years ago

Abstract Let \(H\) be an inner product space, \(X\) a complete subspace of \(H\), and \(Y\) a closed subspace of…

Best uniform approximation of semi-Lipschitz function by extension

3 years ago

Abstract In this paper we consider the problem of best uniform approximation of a real valued semi-Lipschitz function \(F\) defined…

Accurate Laguerre collocation solutions to a class of Emden–Fowler type BVP

3 years ago

Abstract We solve numerically the nonlinear and double singular boundary value problem formed by the well known Emden-Fowler equation \(u^{\prime\prime}=u^{s}x^{-1/2},s>1\)…

Two numerical methods for solving a nonlinear system of integral equations of mixed Volterra-Fredholm type arising from a control problem related to leukemia

3 years ago

Abstract The aim of this paper is to present two algorithms for numerical solving of a fixed final state control…

On some convex combinations of biholomorphic mappings in several complex variables

3 years ago

Abstract In this paper, our interest is devoted to study the convex combinations of the form \((1-\lambda)f+\lambda g\) where \(\lambda…

Asymptotic properties of Kantorovich-type Szász–Mirakjan operators of higher order

3 years ago

Abstract In this paper we study local approximation properties of a higher order Kantorovich-type Szász–Mirakjan operator recently introduced by Sabancigil,…

Simultaneous approximation by Gauss–Weierstrass–Wachnicki operators

3 years ago

Abstract In this note, we spotlight a generalization of Weierstrass integral operators introduced by Eugeniusz Wachnicki. The construction involves modified…

On some control problems for Kolmogorov type systems

3 years ago

Abstract The paper deals with some control problems related to the Kolmogorov system for two interacting populations. For the first…

On the localization and numerical computation of positive radial solutions for φ-Laplace equations in the annulus

3 years ago

Abstract The paper deals with the existence and localization of positive radial solutions for stationary partial differential equations involving a…

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