AbstractIt is proved that the autonomous difference-differential equation ẍ(t) + (a + b) ẋ(t) + ab x(t) = −f(x(t − 1)) (0) has, for a broad class of functions f, a nonconstant periodic solution whenever the associated characteristic equation has a root with positive real part
AbstractThe second order nonlinear delay differential equation with periodic coefficients x″(t)+p(t)...
Abstract. We use the modification of Krasnoselskii’s fixed point theorem due to T. A. Burton ([3]) t...
We prove the existence of periodic solutions of the differential delay equation εx˙(t)+x(t)=f(x(t−1)...
AbstractIt is proved that the autonomous difference-differential equation ẍ(t) + (a + b) ẋ(t) + ab...
AbstractThe equationx″(t)+ω2x(t)=bx([t−1]), where [·] designates the greatest integer function, can ...
AbstractExistence criteria are proved for the periodic solutions of a first order nonlinear differen...
AbstractExistence and uniqueness of 2π-periodic solutions of djx(t)dtj + grad G(x(t − τ)) = e(t, x(t...
AbstractSome new results on the behavior of the solutions to periodic linear delay differential equa...
AbstractA nonlinear difference equation with periodic coefficients and constant delays is considered...
summary:A class of nonlinear simple form differential delay equations with a $T$-periodic coefficien...
We study the periodic solutions of the second-order differential equations of the form ẍ ± xn = µf ...
For periodic solutions to the autonomous delay differential equation x′(t) =-μx(t) + f(x(t-1)) with ...
AbstractIn this note, a Massera type criterion for the existence of periodic solutions for linear fu...
AbstractIn this paper we study the existence of periodic solutions of a delay differential equation ...
We consider a nonlinear distributed delay equation where g and f are smooth, bounded, and odd and sa...
AbstractThe second order nonlinear delay differential equation with periodic coefficients x″(t)+p(t)...
Abstract. We use the modification of Krasnoselskii’s fixed point theorem due to T. A. Burton ([3]) t...
We prove the existence of periodic solutions of the differential delay equation εx˙(t)+x(t)=f(x(t−1)...
AbstractIt is proved that the autonomous difference-differential equation ẍ(t) + (a + b) ẋ(t) + ab...
AbstractThe equationx″(t)+ω2x(t)=bx([t−1]), where [·] designates the greatest integer function, can ...
AbstractExistence criteria are proved for the periodic solutions of a first order nonlinear differen...
AbstractExistence and uniqueness of 2π-periodic solutions of djx(t)dtj + grad G(x(t − τ)) = e(t, x(t...
AbstractSome new results on the behavior of the solutions to periodic linear delay differential equa...
AbstractA nonlinear difference equation with periodic coefficients and constant delays is considered...
summary:A class of nonlinear simple form differential delay equations with a $T$-periodic coefficien...
We study the periodic solutions of the second-order differential equations of the form ẍ ± xn = µf ...
For periodic solutions to the autonomous delay differential equation x′(t) =-μx(t) + f(x(t-1)) with ...
AbstractIn this note, a Massera type criterion for the existence of periodic solutions for linear fu...
AbstractIn this paper we study the existence of periodic solutions of a delay differential equation ...
We consider a nonlinear distributed delay equation where g and f are smooth, bounded, and odd and sa...
AbstractThe second order nonlinear delay differential equation with periodic coefficients x″(t)+p(t)...
Abstract. We use the modification of Krasnoselskii’s fixed point theorem due to T. A. Burton ([3]) t...
We prove the existence of periodic solutions of the differential delay equation εx˙(t)+x(t)=f(x(t−1)...
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