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## Banach Center Publications

2014 | 101 | 1 | 87-92
Tytuł artykułu

### Approximative sequences and almost homoclinic solutions for a class of second order perturbed Hamiltonian systems

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In this work we will consider a class of second order perturbed Hamiltonian systems of the form $q̈ + V_q(t,q) = f(t)$, where t ∈ ℝ, q ∈ ℝⁿ, with a superquadratic growth condition on a time periodic potential V: ℝ × ℝⁿ → ℝ and a small aperiodic forcing term f: ℝ → ℝⁿ. To get an almost homoclinic solution we approximate the original system by time periodic ones with larger and larger time periods. These approximative systems admit periodic solutions, and an almost homoclinic solution for the original system is obtained from them by passing to the limit in $C²_{loc}(ℝ,ℝⁿ)$ when the periods go to infinity. Our aim is to show the existence of two different approximative sequences of periodic solutions: one of mountain pass type and the second of local minima.
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Tom
Numer
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87-92
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2014
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autor
• Faculty of Applied Physics and Mathematics, Gdańsk University of Technology, G. Narutowicza 11/12, 80-233 Gdańsk, Poland
autor
• Faculty of Applied Physics and Mathematics, Gdańsk University of Technology, G. Narutowicza 11/12, 80-233 Gdańsk, Poland
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