Self-similar dynamics for the modified Korteweg-de Vries equation
Résumé
We prove a local well posedness result for the modified Korteweg-de Vries equation in a critical space designed so that is contains self-similar solutions. As a consequence, we can study the flow of this equation around self-similar solutions: in particular, we give an as-ymptotic description of small solutions as t → +∞ and construct solutions with a prescribed blow up behavior as t → 0.
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