Abstract
We study a semilinear nonautonomous second order periodic system with a nonsmooth potential function which exhibits a quadratic or superquadratic growth. We establish the existence of a solution, using minimax methods of the nonsmooth critical point theory.
Citation
Dumitru Motreanu. Viorica V. Motreanu. Nikolaos S. Papageorgiou. "Periodic solutions for nonautonomous systems with nonsmooth quadratic or superquadratic potential." Topol. Methods Nonlinear Anal. 24 (2) 269 - 296, 2004.
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