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The Klein-Gordon equation with small weakly decreasing data. (Léquation de Klein-Gordon à données petites faiblement décroissantes.) (French) Zbl 1069.35511
There are given estimates from below of the lifespan of solutions to the Cauchy problem for Klein-Gordon equations.
MSC:
35L70 Second-order nonlinear hyperbolic equations
35Q53 KdV equations (Korteweg-de Vries equations)
35A07 Local existence and uniqueness theorems (PDE) (MSC2000)
35B05 Oscillation, zeros of solutions, mean value theorems, etc. in context of PDEs
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