Authors: Bouzid Mansouri, Abdelouaheb Ardjouni, Ahcene Djoudi
Abstract
In this work, we study the existence of positive periodic solutions for
fourth-order nonlinear neutral differential equations with variable
coefficients. The results are established by using the Krasnoselskii's fixed
point theorem. An example is given to illustrate this work.
Bouzid Mansouri
Faculty of Sciences, Department of Mathematics,
University of Annaba, P.O. Box 12, Annaba, 23000,
Algeria
E-mail:
Abdelouaheb Ardjouni
Faculty of Sciences and Technology, Department of
Mathematics and Informatics, University of Souk Ahras,
P.O. Box 1553, Souk Ahras, 41000, Algeria
E-mail:
Ahcene Djoudi
Applied Mathematics Lab, Faculty of Sciences,
Department of Mathematics, University of Annaba, P.O.
Box 12, Annaba 23000, Algeria
E-mail:
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