05-70 Massimiliano Berti, Michela Procesi

Quasi-periodic solutions of completely resonant forced wave equations (567K, PS) Feb 16, 05

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Abstract. We prove existence of quasi-periodic solutions with two frequencies of completely resonant, periodically {\it forced}, nonlinear wave equations with periodic spatial boundary conditions. We consider both the cases the forcing frequency is (Case A) a rational number and (Case B) an irrational number.

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