Periodic solutions of second-order non-autonomous dynamical systems with vanishing Green's functions
In this article, we study the existence and multiplicity of positive periodic solutions for second-order non-autonomous dynamical systems when Green's functions are non-negative. The proofs are based on a nonlinear alternative principle of Leray-Schauder and the fixed point theorem in cones....
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| Format: | Article |
| Language: | English |
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Texas State University
2019-04-01
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| Series: | Electronic Journal of Differential Equations |
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| Online Access: | http://ejde.math.txstate.edu/Volumes/2019/47/abstr.html |