Mathematics > Analysis of PDEs
[Submitted on 1 Sep 2025
]
Title: The Euler equations with variable coefficients
Title: 带有变系数的欧拉方程
Abstract: We establish local-in-time existence for the Euler equations on a bounded domain with space-time dependent variable coefficients, given initial data $v_0 \in H^r$ under the optimal regularity condition $r > 2.5$. In the case $r = 3$, we further prove a Beale-Kato-Majda criterion that relates blow-up in the $H^r$ norm to the BMO norm of the variable vorticity $\zeta$.
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