Local well-posedness for dispersion generalized Benjamin-Ono equations in Sobolev spaces

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Abstract

We prove that the Cauchy problem for the dispersion generalized Benjamin-Ono equation?tu+ ?x 1+??xu+uux=0,u(x,0)=u0(x), is locally well-posed in the Sobolev spaces H s for s>1-? if 0???1. The new ingredient is that we generalize the methods of Ionescu, Kenig and Tataru (2008) [13] to approach the problem in a less perturbative way, in spite of the ill-posedness results of Molinet, Saut and Tzvetkov (2001) [21]. Moreover, as a bi-product we prove that if 0
Original languageEnglish
Pages (from-to)2053 - 2084
Number of pages32
JournalJournal of Differential Equations
Volume252
Issue number3
DOIs
Publication statusPublished - 2012
Externally publishedYes

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