Special Session 76: Recent Developments in Nonlinear and Nonlocal Evolution Equations

Liouville-type theorems for the stationary ideal magnetohydrodynamics equations in multi-dimensional cases

Anthony Suen
The Education University of Hong Kong
Hong Kong
Co-Author(s):    Lv Cai, Ning-An Lai, Manwai Yuen
Abstract:
We establish Liouville-type theorems for the stationary ideal compressible magnetohydrodynamics system in $\mathbb{R}^n$ with $n\in\{1, 2, 3\}$. We address various cases when the finite energy condition is in force and the stationary density function $\rho$ satisfies $\lim_{|x|\to\infty}\rho(x)=\rho_\infty\ge0$. Our proof relies heavily on the good structure of the nonlinear magnetic force term and the usage of well-chosen smooth cut-off test functions.