Existence of positive periodic solutions of nonlinear neutral differential systems with variable delays

DOI10.1007/s11565-017-0292-0zbMath1397.34115OpenAlexW2741726517MaRDI QIDQ1743827

Abdelouaheb Ardjouni, Ahcene Djoudi, Hocine Gabsi

Publication date: 16 April 2018

Published in: Annali dell'Università di Ferrara. Sezione VII. Scienze Matematiche (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1007/s11565-017-0292-0

zbMATH Keywords

nonlinearpositive periodic solutionsfixed point theoremcoincidence degreevariable delay

Mathematics Subject Classification ID

Fixed-point theorems (47H10) Degree theory for nonlinear operators (47H11) Neutral functional-differential equations (34K40) Periodic solutions to functional-differential equations (34K13)

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