Special Session 21: Evolution Equations and Integrable Systems

Global solutions of quasilinear mKdV equations

Qingtian Zhang
West Virginia University
USA
Co-Author(s):    Fangchi Yan
Abstract:
We consider the quasi-linear Hamiltonian mKdV equation $\varphi_t+\partial_x^3\varphi+\partial_x (\varphi^3)+\partial_x[c(\varphi)\partial_x(c(\varphi)\partial_x\varphi)]=0$. We prove that when the initial data is sufficiently smooth, localized and small, the solution exists global-in-time.