Periodic solutions for a Liénard equation with two deviating arguments.
Periodic solutions for a neutral functional differential equation with multiple variable lags
By means of the Krasnoselskii fixed piont theorem, periodic solutions are found for a neutral type delay differential system of the form
Periodic solutions for a second-order neutral differential equation with variable parameter and multiple deviating arguments.
Periodic solutions for first order neutral functional differential equations with multiple deviating arguments
We consider first order neutral functional differential equations with multiple deviating arguments of the form . By using coincidence degree theory, we establish some sufficient conditions on the existence and uniqueness of periodic solutions for the above equation. Moreover, two examples are given to illustrate the effectiveness of our results.
Periodic solutions for functional differential equations with periodic delay close to zero.
Periodic solutions for -th order delay differential equations with damping terms
By using the coincidence degree theory of Mawhin, we study the existence of periodic solutions for th order delay differential equations with damping terms . Some new results on the existence of periodic solutions of the investigated equation are obtained.
Periodic solutions for neutral nonlinear differential equations with functional delay.
Periodic solutions for planar systems with time-varying delays.
Periodic solutions for small and large delays in a tumor-immune system model.
Periodic solutions for some delay differential equations appearing in models of power systems
The authors use coincidence degree theory to establish some new results on the existence of T-periodic solutions for the delay differential equation x''(t) + a₁x'(t) + a₂(xⁿ(t))' + a₃x(t)+ a₄x(t-τ) + a₅xⁿ(t) + a₆xⁿ(t-τ) = f(t), which appears in a model of a power system. These results are of practical significance.
Periodic solutions for some partial functional differential equations.
Periodic Solutions in a Mathematical Model for the Treatment of Chronic Myelogenous Leukemia
Existence and stability of periodic solutions are studied for a system of delay differential equations with two delays, with periodic coefficients. It models the evolution of hematopoietic stem cells and mature neutrophil cells in chronic myelogenous leukemia under a periodic treatment that acts only on mature cells. Existence of a guiding function leads to the proof of the existence of a strictly positive periodic solution by a theorem of Krasnoselskii....
Periodic solutions of a delayed predator-prey model with stage structure for predator.
Periodic solutions of a differential delay equation of Rayleigh type
Periodic solutions of a discrete-time diffusive system governed by backward difference equations.
Periodic solutions of a high order equation with deviating arguments.
Periodic solutions of abstract and partial differential equations with deviation
Periodic solutions of differential equations with a general piecewise constant argument and applications.
Periodic solutions of fourth-order functional differential equations with -Laplacian
Periodic solutions of Liénard equations