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arXiv 2012.09261math.AP
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小极值激波的精确a-收缩估计

Sharp a-contraction estimates for small extremal shocks

William Golding, Sam Krupa, Alexis Vasseur

AI总结:

本文研究了1维双曲守恒律系统小极值激波在大扰动下的a-收缩性质,证明权重系数a与激波大小成比例,为证明2×2系统的唯一性和BV-弱稳定性提供了关键基础。

摘要:

本文研究了赋予单一凸熵的1维双曲守恒律系统的小极值激波在受到大扰动时的a-收缩性质。我们证明了权重系数a可以选择与激波大小成比例的振幅。本文的主要结果是配套论文[{arXiv:2010.04761}, 2020]中的关键基石,该论文证明了2×2双曲守恒律系统的唯一性和BV-弱稳定性结果。

英文摘要:

In this paper, we study the $a$-contraction property of small extremal shocks for 1-d systems of hyperbolic conservation laws endowed with a single convex entropy, when subjected to large perturbations. We show that the weight coefficient $a$ can be chosen with amplitude proportional to the size of the shock. The main result of this paper is a key building block in the companion paper, [{arXiv:2010.04761}, 2020], in which uniqueness and BV-weak stability results for $2\times 2$ systems of hyperbolic conservation laws are proved.

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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