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Periodic solutions of a nonlinear wave equation
Journal article

Periodic solutions of a nonlinear wave equation

Abbas Bahri and Haïm Brezis
Proceedings of the Royal Society of Edinburgh. Section A. Mathematics, Vol.85(3-4), pp.313-320
1980

Abstract

We provide a sufficient and “almost” necessary condition for the existence of a periodic solution of the equation where F is nondecreasing in u and has a small linear growth as |u|→∞.

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