Fixed point results for weakly Picard non-self operators on ℝ+m-metric spaces
Abstract The aim of this paper is to extend the graphic contraction principle, well-known for self operators, to non-self operators.…
Nonlinear analysis
A differential equation with delay from biology
Abstract The purpose of this paper is to present a differential equation with delay from biological excitable medium. Existence, uniqueness…
Abstract Volterra operators
Abstract The aim of this paper is to study a differential equation with abstract Volterra operator. Existence and uniqueness, inequalities…
Functional-differential equations with “maxima” via weakly Picard operators theory
Abstract The purpose of this paper is to present a differential equation with ”maxima”. Existence, uniqueness, inequalities of Caplygin type…
On a D.V. Ionescu’s problem for functional-differential equations
Abstract The purpose of this paper is to study a generalization of a D.V. Ionescu’s problem. Existence, uniqueness and data…
Integro-differential equation with two times modifications
Abstract We consider an integro-differential equation with two times modifications. Existence, uniqueness and monotony results of solution for the Cauchy…
Integro-Differential Equation with two time lags
Abstract We consider an integro-differential equation with two time lags and we prove the existence, uniqueness and convergence of the…
Exact solutions for differential equations in Celestial Mechanics
Abstract There are many problems in Celestial Mechanics which can be reduced to differential equations, either linear or nonlinear. We…
Some variants of Ćirić’s multi-valued contraction principle
Abstract In this article, a study of the fixed point problem for Ciric type multi-valued operators is presented. More precisely, …
Localization and multiplicity for stationary Stokes systems with variable viscosity
AbstractIn this paper we discuss the localization and the multiplicity of solutions for the stationary Stokes system with variable viscosity…