Topological transversality, perturbation theorems and second order differential equations
Abstract The topological transversality theorem for condensing mappings stated in [7] is used to prove some perturbation theorems: a theorem…
not-at-ICTP
On the quasiconvex functions of higher order
Abstract ?? AuthorsRadu Precup Department of Mathematics, Babes-Bolyai University, Cluj-Napoca, Romania Keywords? Paper coordinatesR. Precup, On the quasiconvex functions of…
Some remarks on Clarke generalized gradient of quasiconvex functions
Abstract AuthorsRadu Precup Department of Mathematics, Babes-Bolyai University, Cluj-Napoca, Romania Keywords? Paper coordinatesR. Precup, Some remarks on Clarke generalized gradient…
Topological transversality and boundary problems for second order functional differential equations
Abstract ?? AuthorsRadu Precup Department of Mathematics, Babes-Bolyai University, Cluj-Napoca, Romania Keywords? Paper coordinatesR. Precup, Topological transversality and boundary problems…
Positive solutions of the initial value problem for an integral equation modeling infectious disease
Abstract ?? AuthorsRadu Precup Department of Mathematics, Babes-Bolyai University, Cluj-Napoca, Romania Keywords? Paper coordinatesR. Precup, Positive solutions of the initial…
Foundations of the continuation principles of Leray-Schauder type
Abstract ?? AuthorsRadu Precup Department of Mathematics, Babes-Bolyai University, Cluj-Napoca, Romania Keywords? Paper coordinatesR. Precup, Foundations of the continuation principles…
Existence results for nonlinear boundary value problems under nonresonance conditions
AbstractWe give applications of Banach, Schauder, Darbo and Leray-Schauder fixed point theorems to prove existence results for weak solutions of…
Monotone iterations for decreasing maps in ordered Banach spaces
AbstractIn this paper we propose a version of the monotone iterations method for decreasing maps in ordered Banach spaces. In…
Analysis of a nonlinear integral equation modelling infection diseases
Abstract To describe the spread of virus diseases with contact rate that varies seasonally, the following delay integral equation has…
Inequalities and compactness
AbstractWe use the inequalities of Holder, Gronwall and Wirtinger type to establish sufficient conditions for that the null function is…