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arxiv: 1008.1391 · v2 · submitted 2010-08-08 · 🧮 math.AP

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Large time wellposdness to the 3-D Capillary-Gravity Waves in the long wave regime

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keywords longproveregimesolutionstimewavewavesaccurately
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In the regime of weakly transverse long waves, given long-wave initial data, we prove that the nondimensionalized water wave system in an infinite strip under influence of gravity and surface tension on the upper free interface has a unique solution on $[0,{T}/\eps]$ for some $\eps$ independent of constant $T.$ We shall prove in the subsequent paper \cite{MZZ2} that on the same time interval, these solutions can be accurately approximated by sums of solutions of two decoupled Kadomtsev-Petviashvili (KP) equations.

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