Differential and Integral Equations

A bilinear Airy-estimate with application to gKdV-3

Axel Grünrock

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Abstract

The Fourier restriction norm method is used to show local wellposedness for the Cauchy-Problem \[u_t + u_{xxx} + (u^4)_x=0,\hspace{1cm}u(0)=u_0 \in H^s_x({\bf R}), \,\,\,s>-\tfrac{1}{6}\] for the generalized Korteweg-deVries equation of order three, for short gKdV-3. For real-valued data $u_0 \in L^2_x({\bf R})$ global wellposedness follows by the conservation of the $L^2$ norm. The main new tool is a bilinear estimate for solutions of the Airy-equation.

Article information

Source
Differential Integral Equations, Volume 18, Number 12 (2005), 1333-1339.

Dates
First available in Project Euclid: 21 December 2012

Permanent link to this document
https://projecteuclid.org/euclid.die/1356059713

Mathematical Reviews number (MathSciNet)
MR2174975

Zentralblatt MATH identifier
1212.35412

Subjects
Primary: 35Q53: KdV-like equations (Korteweg-de Vries) [See also 37K10]
Secondary: 35B30: Dependence of solutions on initial and boundary data, parameters [See also 37Cxx]

Citation

Grünrock, Axel. A bilinear Airy-estimate with application to gKdV-3. Differential Integral Equations 18 (2005), no. 12, 1333--1339. https://projecteuclid.org/euclid.die/1356059713


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