arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2106.09228math.AP
收藏

Hunter-Saxton方程保守解的正则结构

Regularity structure of conservative solutions to the Hunter-Saxton equation

Yu Gao, Hao Liu, Tak Kwong Wong

摘要:

本文利用特征线方法刻画了Hunter-Saxton方程(能量)守恒解的正则性结构,并证明了解的整体存在唯一性.目前的工作和以前的结果之间的主要区别是,我们能够在一个非常精确的方式来描述能量测度的奇异性和它们的性质。特别是,我们表明,奇点,其时间和空间位置也明确给出了这项工作,可能只出现在最多可数多次,并完全由初始能量测量的绝对连续部分。我们的数学分析的基础上使用的方法的特征在一个广义的框架,其中包括的Hunter-Saxton方程和能量措施的解决方案的演变。该方法还提供了解的半群性质和所有时刻的能量测度的清晰描述。

英文摘要:

In this paper we characterize the regularity structure, as well as show the global-in-time existence and uniqueness, of (energy) conservative solutions to the Hunter-Saxton equation by using the method of characteristics. The major difference between the current work and previous results is that we are able to characterize the singularities of energy measure and their nature in a very precise manner. In particular, we show that singularities, whose temporal and spatial locations are also explicitly given in this work, may only appear at at most countably many times, and are completely determined by the absolutely continuous part of initial energy measure. Our mathematical analysis is based on using the method of characteristics in a generalized framework that consists of the evolutions of solution to the Hunter-Saxton equation and the energy measure. This method also provides a clear description of the semi-group property for the solution and energy measure for all times.

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。

↑