Multiple periodic solutions to a class of second-order nonlinear mixed-type functional differential equations

DOI10.1155/IJMMS.2005.2689zbMath1098.34058OpenAlexW2048175473MaRDI QIDQ2368386

Xiao-Bao Shu, Yuan-Tong Xu

Publication date: 19 April 2006

Published in: International Journal of Mathematics and Mathematical Sciences (Search for Journal in Brave)

Full work available at URL: https://eudml.org/doc/52749

zbMATH Keywords

functional-differential equationperiodic solutioncritical pointgroup index theory

Mathematics Subject Classification ID

Abstract critical point theory (Morse theory, Lyusternik-Shnirel'man theory, etc.) in infinite-dimensional spaces (58E05) Degree theory for nonlinear operators (47H11) Periodic solutions to functional-differential equations (34K13)

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