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arXiv 2502.12840math.AP
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2×2守恒律方程组的Liouville型定理与动力学表述

Liouville type theorem and kinetic formulation for 2x2 systems of conservation laws

Fabio Ancona, Elio Marconi, Luca Talamini

AI总结:

本文研究2×2守恒律方程组的有界熵解,建立有限熵产生解的动力学方程刻画,并证明真正非线性情形的Liouville型定理,说明解在维数至多1的例外集外具有消失平均振荡。

摘要:

我们研究2×2守恒律方程组的$\mathbf L^\infty$熵解。我们证明,若存在一致凸熵,则这些解满足一对动力学方程(在速度上非局部),随后表明这些方程刻画了所有具有有限熵产生的解。接下来,我们针对真正非线性方程组证明了一个Liouville型定理,这是本文的主要结果。该定理特别意味着,对于每个有限熵解,每个点$(t,x)\in\mathbb R^+\times\mathbb R\setminus\br J$都具有消失平均振荡,其中$\br J\subset\mathbb R^+\times\mathbb R$是一个Hausdorff维数至多为1的集合。

英文摘要:

We study $\mathbf L^\infty$ entropy solutions to $2\times 2$ systems of conservation laws. We show that, if a uniformly convex entropy exists, these solutions satisfy a pair of kinetic equations (nonlocal in velocity), which are then shown to characterize all solutions with finite entropy production. Next, we prove a Liouville-type theorem for genuinely nonlinear systems, which is the main result of the paper. This implies in particular that for every finite entropy solution, every point $(t,x) \in \mathbb R^+\times \mathbb R\setminus \br J$ is of vanishing mean oscillation, where $\br J \subset \mathbb R^+\times \mathbb R$ is a set of Hausdorff dimension at most 1.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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