Citation: | Zhibo Cheng, Lisha Lv, Feifan Li. PERIODIC SOLUTION FOR SECOND-ORDER DAMPED NEUTRAL DIFFERENTIAL EQUATION VIA A FIXED POINT THEOREM OF LERAY-SCHAUDER TYPE[J]. Journal of Applied Analysis & Computation, 2021, 11(4): 1731-1748. doi: 10.11948/20200041 |
The aim of this paper is to show that a fixed point theorem of Leray-Schauder type can be applied to damped neutral differential equations. Using the positivity of Green's function, we prove the existence of a positive periodic solution for second-order damped neutral differential equation in the cases that sub-linearity, semi-linearity and super-linearity conditions.
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