not-at-ICTP

Abstract We study the existence of nontrivial solutions to the boundary value problem \(-u^{\prime \prime}+cu\prime+\lambda u\) \( =f(x,u),\ \ -\infty<x<+\infty\)…

AbstractData dependence of fixed points for several classes of non-self generalized contractions is studied. A fibre non-self contraction theorem is…

AbstractExistence, localization and multiplicity results of positive solutions to a system of singular second-order differential equations are established by means…

AbstractIn this paper we explain the advantage of vector-valued norms and the role of matrices that are convergent to zero…

Abstract In this work, existence and localization results for \(C_1\)-solutions to elliptic Dirichlet boundary value problems are established. The approach…

AbstractA general nonresonance theory of semilinear operator equations under regularity conditions is developed. Existence of weak solutions (in the energetic…

Abstract The aim of this paper is to present some existence and localization results of radial solutions for elliptic equations…

AbstractAn existence theory for systems of two non-linear operator equations in Hilbert spaces is presented under non-resonance conditions with respect…

AbstractExistence results for semilinear systems of abstract evolution equations are established by means of Perov, Schauder and Leray-Schauder Fixed Point…

Abstract The aim of this paper is to present some existence results of positive solutions for elliptic equations and systems…