Guihua Fei
Abstract:
We study the existence of periodic solutions for some
Hamiltonian systems
under new
superquadratic conditions which cover the case
with
.
By using the linking theorem, we obtain some new results.
Submitted September 20, 2001. Published Janaury 15, 2002.
Math Subject Classifications: 58E05, 58F05, 34C25.
Key Words: periodic solution, Hamiltonian system, linking theorem.
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Guihua Fei Department of Mathematics and statistics University of Minnesota Duluth, MN 55812, USA e-mail: gfei@d.umn.edu |
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