Multiple periodic solutions of nonautonomous delay differential equations

DOI10.1142/s0218127423501183zbMath1543.34087MaRDI QIDQ6538827

Weigao Ge, Lin Li

Publication date: 14 May 2024

Published in: International Journal of Bifurcation and Chaos in Applied Sciences and Engineering (Search for Journal in Brave)

zbMATH Keywords

periodic solutionsvariational methodhigh ordernonautonomous delay differential equation\( Z_n\) index theory

Mathematics Subject Classification ID

Variational methods involving nonlinear operators (47J30) Degree theory for nonlinear operators (47H11) Periodic solutions to functional-differential equations (34K13) Nonautonomous smooth dynamical systems (37C60)

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