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On the existence of periodic solutions for scalar second order differential equations when only the asymptotic behaviour of the potential is known

Author: Alessandro Fonda
Journal: Proc. Amer. Math. Soc. 119 (1993), 439-445
MSC: Primary 34C25; Secondary 34B15
MathSciNet review: 1154246
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Abstract: Assuming only asymptotic conditions on the potential function, we prove the existence of periodic solutions for equations whose nonlinearity stays below the first curve of Fučik's spectrum.

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