In this paper, we study the existence of positive periodic solutions to the equation x" = f (t, x). It is proved that such a equation has more than one positive periodic solution when the nonlinearity changes sign. The proof relies on a fixed point theorem in cones
By using Krasnoselʹski\u{ı}'s fixed point theorem on cones, the author studies the existence of posi...
AbstractWe prove the existence and multiplicity of positive T-periodic solution(s) for T-periodic eq...
In this paper, we study two types of second-order nonlinear differential equations with variable coe...
In this paper, we study the existence of positive periodic solutions to the equation x" = f (t,...
AbstractIn this work, we have obtained existence results for single and multiple positive periodic s...
Abstract Using the fixed point theorem, we study the existence and multiplicity of positive periodic...
AbstractThe existence and multiplicity of positive solutions are established to periodic boundary va...
Abstract. In this paper, we study positive periodic solutions to singular second order differential ...
AbstractIn our paper, by employing Krasnoselskii fixed point theorem, we investigate the existence o...
In this paper, we study positive periodic solutions to singular second order differential systems. I...
AbstractWe prove the existence of positive solutions of second-order nonlinear differential equation...
AbstractIn this paper, we consider the existence and multiplicity of positive periodic solutions for...
In this paper, we study positive periodic solutions to singular second order differential systems....
WOS: 000169651500010We prove the existence of positive solutions of second-order nonlinear different...
AbstractIn this paper, we are concerned with the existence and multiplicity of positive 2π-periodic ...
By using Krasnoselʹski\u{ı}'s fixed point theorem on cones, the author studies the existence of posi...
AbstractWe prove the existence and multiplicity of positive T-periodic solution(s) for T-periodic eq...
In this paper, we study two types of second-order nonlinear differential equations with variable coe...
In this paper, we study the existence of positive periodic solutions to the equation x" = f (t,...
AbstractIn this work, we have obtained existence results for single and multiple positive periodic s...
Abstract Using the fixed point theorem, we study the existence and multiplicity of positive periodic...
AbstractThe existence and multiplicity of positive solutions are established to periodic boundary va...
Abstract. In this paper, we study positive periodic solutions to singular second order differential ...
AbstractIn our paper, by employing Krasnoselskii fixed point theorem, we investigate the existence o...
In this paper, we study positive periodic solutions to singular second order differential systems. I...
AbstractWe prove the existence of positive solutions of second-order nonlinear differential equation...
AbstractIn this paper, we consider the existence and multiplicity of positive periodic solutions for...
In this paper, we study positive periodic solutions to singular second order differential systems....
WOS: 000169651500010We prove the existence of positive solutions of second-order nonlinear different...
AbstractIn this paper, we are concerned with the existence and multiplicity of positive 2π-periodic ...
By using Krasnoselʹski\u{ı}'s fixed point theorem on cones, the author studies the existence of posi...
AbstractWe prove the existence and multiplicity of positive T-periodic solution(s) for T-periodic eq...
In this paper, we study two types of second-order nonlinear differential equations with variable coe...
DOI
Add to ORKG