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KCI 등재
PERIODICITY AND POSITIVITY IN NEUTRAL NONLINEAR LEVIN-NOHEL INTEGRO DIFFERENTIAL EQUATIONS
( Karima Bessioud ) , ( Abdelouaheb Ardjouni ) , ( Ahcene Djoudi )
UCI I410-ECN-0102-2022-400-000260159

Our paper deals with the following neutral nonlinear Levin-Nohel integro-differential with variable delay By using Krasnoselskii’s fixed point theorem we obtain the existence of periodic and positive periodic solutions and by contraction mapping principle we obtain the existence of a unique periodic solution. An example is given to illustrate this work.

1. Introduction
2. Existence and uniqueness of periodic solutions
3. Existence of positive periodic solutions
References
[자료제공 : 네이버학술정보]
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