A note on a nonresonance condition at zero for first-order planar systems
We introduce a Landesman-Lazer type nonresonance condition at zero for planar systems and discuss its rotational interpretation. We then show an application concerning multiplicity of T-periodic solutions to unforced Hamiltonian systems like $$ Ju'=\nabla H(t, u), \quad \nabla H(t, 0) \equ...
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| Format: | Article |
| Language: | English |
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Texas State University
2015-01-01
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| Series: | Electronic Journal of Differential Equations |
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| Online Access: | http://ejde.math.txstate.edu/Volumes/2015/21/abstr.html |