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arXiv 1502.02611math.AP
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非线性Wave Equation保守解的通有正则性

Generic Regularity of Conservative Solutions to a Nonlinear Wave Equation

Alberto Bressan, Geng Chen

摘要:

本文研究非线性波动方程$u_{tt} - c(u)\big(c(u) u_x\big)_x = 0$的保守解.对于$C^3$初始数据的开稠密集,我们证明了解在$t$平面上是分段光滑的,而梯度$u_x$可以沿多条特征曲线爆破.分析是基于在[7]中引入的变量变换,该变换将方程简化为具有光滑系数的半线性系统,然后应用Thom的横截性定理。

英文摘要:

The paper is concerned with conservative solutions to the nonlinear wave equation $u_{tt} - c(u)\big(c(u) u_x\big)_x = 0$. For an open dense set of $C^3$ initial data, we prove that the solution is piecewise smooth in the $t$-$x$ plane, while the gradient $u_x$ can blow up along finitely many characteristic curves. The analysis is based on a variable transformation introduced in [7], which reduces the equation to a semilinear system with smooth coefficients, followed by an application of Thom's transversality theorem.

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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