Type: Article
Publication Date: 1999-01-01
Citations: 40
DOI: https://doi.org/10.4310/mrl.1999.v6.n6.a13
The initial value problem for the Korteweg-deVries equation on the line is shown to be globally wellposed for rough data.In particular, we show global wellposedness for certain initial data in H s for an interval of negative s.The proof is an adaptation of a general argument introduced by Bourgain to prove a similar result for a nonlinear Schrödinger equation.The proof relies on a generalization of the bilinear estimate of Kenig, Ponce and Vega.