Multiplicity of periodic solutions to symmetric delay differential equations
DOI10.1007/s11784-013-0119-2zbMath1288.47052OpenAlexW1989388701MaRDI QIDQ360535
Huafeng Xiao, Jian She Yu, Wiesław Krawcewicz
Publication date: 27 August 2013
Published in: Journal of Fixed Point Theory and Applications (Search for Journal in Brave)
Full work available at URL: https://doi.org/10.1007/s11784-013-0119-2
periodic solutionsdelay differential equationsasymptotically linear systemequivariant Conley indexequivariant gradient degree
Variational methods involving nonlinear operators (47J30) Abstract critical point theory (Morse theory, Lyusternik-Shnirel'man theory, etc.) in infinite-dimensional spaces (58E05) Degree theory for nonlinear operators (47H11) Degree, winding number (55M25) Periodic solutions to functional-differential equations (34K13) Applications of variational problems in infinite-dimensional spaces to the sciences (58E50) Variational aspects of group actions in infinite-dimensional spaces (58E40) Functional-differential equations with fractional derivatives (34K37)
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