The Existence of Multiple Periodic Solutions of Nonautonomous Delay Differential Equations
Keyword(s):
We study the multiplicity of periodic solutions of nonautonomous delay differential equations which are asymptotically linear both at zero and at infinity. By making use of a theorem of Benci, some sufficient conditions are obtained to guarantee the existence of multiple periodic solutions.
2009 ◽
Vol 10
(5)
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pp. 3285-3297
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2017 ◽
Vol 10
(04)
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pp. 1960-1970
2019 ◽
Vol 9
(3)
◽
pp. 298