The existence of multiple periodic solutions of nonautonomous delay differential equations

DOI10.1155/2011/829107zbMath1222.34086OpenAlexW1997670972WikidataQ58690537 ScholiaQ58690537MaRDI QIDQ555009

Jianyong Qiao, Sumit K. Garg

Publication date: 22 July 2011

Published in: Journal of Applied Mathematics (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1155/2011/829107

zbMATH Keywords

multiple periodic solutionsvariational functionalnonautonomous delay differential equations

Mathematics Subject Classification ID

Abstract critical point theory (Morse theory, Lyusternik-Shnirel'man theory, etc.) in infinite-dimensional spaces (58E05) Periodic solutions to functional-differential equations (34K13)

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