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arXiv 0705.2849math.AP
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2+1维非线性径向数据Wave Equation的局部存在性

Local Existence for Nonlinear Wave Equation with Radial Data in 2+1 Dimensions

Chengbo Wang, Daoyuan Fang

摘要:

对径向情形下的拟线性波动方程,利用$H^s$和$s>3/2$方法,在改进的径向情形下,得到了2+1维中具有径向初值的拟线性波动方程解的局部存在性结果.此外,我们还得到了半线性波动方程相应的局部适定结果。这里所需的规则性指数比指数7/4小小于1/4,指数7/4通常基本上是尖锐的。

英文摘要:

We get a local existence result in $H^s$ with $s>3/2$ for second order quasilinear wave equation with radial initial data in 2+1 dimensions, based on an improvement of Strichartz estimate in the radial case. Moreover, we get the corresponding local well-posed result for semilinear wave equation. The required index of regularity here is 1/4 less than the index 7/4, which is essentially sharp in general.

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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