Periodic solutions for functional differential equations with multiple state-depend time lags
نویسندگان
چکیده
منابع مشابه
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 x (t) + cx (t− τ) = A (t, x(t)) x (t) + f (t, x (t− r1 (t)) , . . . , x (t− rk (t))) .
متن کاملPositive periodic solutions of functional differential equations
We consider the existence, multiplicity and nonexistence of positive o-periodic solutions for the periodic equation x0ðtÞ 1⁄4 aðtÞgðxÞxðtÞ lbðtÞf ðxðt tðtÞÞÞ; where a; bACðR; 1⁄20;NÞÞ are o-periodic, Ro 0 aðtÞ dt40; Ro 0 bðtÞ dt40; f ; gACð1⁄20;NÞ; 1⁄20;NÞÞ; and f ðuÞ40 for u40; gðxÞ is bounded, tðtÞ is a continuous o-periodic function. Define f0 1⁄4 limu-0þ f ðuÞ u ; fN 1⁄4 limu-N f ðuÞ u ; i0...
متن کاملExistence and uniqueness of solutions for neutral periodic integro-differential equations with infinite delay
...
متن کاملOn the Existence of Positive Periodic Solutions for Second-Order Functional Differential Equations with Multiple Delays
and Applied Analysis 3 The techniques used in this paper are completely different from those in 5 . Our results are more general than those in 5 in two aspects. Firstly, we relax the conditions of the coefficient a t appeared in an equation in 5 and expand the range of its values. Secondly, by constructing a special cone and applying the fixed-point index theory in cones, we obtain the essentia...
متن کاملMultiple Periodic Solutions for Impulsive Functional Differential Equations with Feedback Control
Using the well known Leggett-Williams fixed point theorem, we study the existence of periodic solutions for a class of impulsive functional equations with feedback control. The main results are illustrated with two examples.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Topological Methods in Nonlinear Analysis
سال: 1994
ISSN: 1230-3429
DOI: 10.12775/tmna.1994.006