## On a generalization of Bleimann, Butzer and Hahn operators based on q-integers

Abstract We propose a class of linear positive operators based on q-integers. These operators depend on a non-negative parameter and…

Abstract We propose a class of linear positive operators based on q-integers. These operators depend on a non-negative parameter and…

Abstract The paper deals with a sequence of linear positive operators introduced via q-Calculus. We give a generalization in Kantorovich…

Abstract Starting from a general sequence of linear and positive operators of discrete type, we associate its r-th order generalization. This…

AbstractThe aim of the is to study the existence of solutions of initial value problems for nonlinear first order differential…

Abstract We study the existence of positive solutions of the functional-differential system \(u_{1}^{\prime \prime}\left( t\right) +a_{1}\left( t\right) f_{1}\left(u_{1}(g(t\right) ),u_{2}\left( g\left(…

AbstractThis paper deals with weak solvability of the Cauchy-Dirichlet problem for the perturbed time-dependent Schrödinger equation. We use the operator…

AbstractWe obtain existence and localization results of positive nontrivial solutions for a class of semilinear elliptic variational systems. The proof…

AbstractWe obtain existence and localization results of positive nontrivial solutions for a class of semilinear elliptic variational systems. The proof…

AbstractThe implicit methods for numerical solving of ODEs lead to nonlinear equations which are usually solved by the Newton method.…

AbstractIn a first approximation, the Earth’s interior has an isotropic structure with a spherical symmetry. Over the last decades the…