Global well-posedness for dissipative Korteweg-de Vries equations

Details Global well-posedness for dissipative Korteweg-de Vries equations Global well-posedness for dissipative Korteweg-de Vries equations

2007-06-12

arxiv.org/abs/0706.1730v1

Mathematics

Analysis of PDEs

Scientific paper

This paper is devoted to the well-posedness for dissipative KdV equations
$u_t+u_{xxx}+|D_x|^{2\alpha}u+uu_x=0$, $0<\alpha\leq 1$. An optimal bilinear
estimate is obtained in Bourgain's type spaces, which provides global
well-posedness in $H^s(\R)$, $s>-3/4$ for $\alpha\leq1/2$ and
$s>-3/(5-2\alpha)$ for $\alpha>1/2$.

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