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most citedSobolev quasi periodic solutions of multidimensional wave equations with a multiplicative potential

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math.AP2019

Quasi-periodic solutions of nonlinear wave equations on the d-dimensional torus

Massimiliano Berti, Philippe Bolle

The main result of this research Monograph is the existence of small amplitude time quasi-periodic solutions for autonomous nonlinear wave equations $$ u_{tt} - Δu + V(x) u + g(x,…