AbstractIn this paper we shall study the existence of a periodic solution to the nonlinear differential equationxtt+Axt−A*xt−A*Ax+B(t)x+f(t,x(t))=0 in some complex Hilbert space, using duality and variational methods
Demostramos (véase Teorema 2.1) que la existencia de puntos críticos de cierto funcional J : H → R,...
AbstractIn this work, we study the anti-periodic problem for a nonlinear evolution inclusion where t...
AbstractWe study the existence of periodic solutions to differential equations of the formL(x)+g(t,x...
AbstractWe show that if u is a bounded solution on R+ of u″(t) ϵ Au(t) + f(t), where A is a maximal ...
AbstractIn this paper we shall study the existence of a periodic solution to the nonlinear different...
AbstractSome existence theorems are obtained by the least action principle for periodic solutions of...
AbstractExistence of ω-periodic solutions ofnth order ordinary differential equations with nonlinear...
AbstractA broad class of nonlinear, non-monotone anti-periodic boundary value problems in a Hilbert ...
summary:We study the existence and positivity of solutions of a highly nonlinear periodic differenti...
AbstractThis note is a generalization of one of a paper by Mehri and Hamedani. Under suitable condit...
AbstractIn this paper, we study the existence problem of anti-periodic solutions for the following f...
summary:The existence and multiplicity results are shown for certain types of problems with nonlinea...
AbstractIn this paper, we establish existence and multiplicity results for the problemx″+x+f(t,x,x′)...
AbstractIn this paper, we study the existence problem of periodic solutions for the following first-...
summary:The existence and multiplicity results are shown for certain types of problems with nonlinea...
Demostramos (véase Teorema 2.1) que la existencia de puntos críticos de cierto funcional J : H → R,...
AbstractIn this work, we study the anti-periodic problem for a nonlinear evolution inclusion where t...
AbstractWe study the existence of periodic solutions to differential equations of the formL(x)+g(t,x...
AbstractWe show that if u is a bounded solution on R+ of u″(t) ϵ Au(t) + f(t), where A is a maximal ...
AbstractIn this paper we shall study the existence of a periodic solution to the nonlinear different...
AbstractSome existence theorems are obtained by the least action principle for periodic solutions of...
AbstractExistence of ω-periodic solutions ofnth order ordinary differential equations with nonlinear...
AbstractA broad class of nonlinear, non-monotone anti-periodic boundary value problems in a Hilbert ...
summary:We study the existence and positivity of solutions of a highly nonlinear periodic differenti...
AbstractThis note is a generalization of one of a paper by Mehri and Hamedani. Under suitable condit...
AbstractIn this paper, we study the existence problem of anti-periodic solutions for the following f...
summary:The existence and multiplicity results are shown for certain types of problems with nonlinea...
AbstractIn this paper, we establish existence and multiplicity results for the problemx″+x+f(t,x,x′)...
AbstractIn this paper, we study the existence problem of periodic solutions for the following first-...
summary:The existence and multiplicity results are shown for certain types of problems with nonlinea...
Demostramos (véase Teorema 2.1) que la existencia de puntos críticos de cierto funcional J : H → R,...
AbstractIn this work, we study the anti-periodic problem for a nonlinear evolution inclusion where t...
AbstractWe study the existence of periodic solutions to differential equations of the formL(x)+g(t,x...
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