On the support of solutions to the Zakharov-Kuznetsov equation. (English) Zbl 1231.35195

The Zakharov-Kuznetsov equation \(u_t+u_{xxx}+u_{xyy}+uu_x=0\) is considered. It is proven that any sufficiently smooth solution with compact support at two different times is identically zero. Estimates of the Carleman type are employed in the proof.


35Q53 KdV equations (Korteweg-de Vries equations)
35B65 Smoothness and regularity of solutions to PDEs
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