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Found 35 Documents (Results 1–35)

Planar Hamiltonian systems: index theory and applications to the existence of subharmonics. (English) Zbl 1507.37071

MSC:  37J12 37J51 37E45
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Multiple periodic solutions for a Duffing type equation with one-sided sublinear nonlinearity: beyond the Poincaré-Birkhoff twist theorem. (English) Zbl 1456.34040

Pinelas, Sandra (ed.) et al., Differential and difference equations with applications. Selected papers based on the presentations at the fourth international conference, ICDDEA 2019, Lisbon, Portugal, July 1–5, 2019. Cham: Springer. Springer Proc. Math. Stat. 333, 207-223 (2020).
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Resonance and rotation numbers for planar Hamiltonian systems: multiplicity results via the Poincaré-Birkhoff theorem. (English) Zbl 1220.37036

MSC:  37E45 34C25 37J10
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