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arXiv 2012.05374math.AP
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高维非标度不变半线性wave equations的爆破速率

The blow-up rate for a non-scaling invariant semilinear wave equations in higher dimensions

Mohamed Ali Hamza, Hatem Zaag

摘要:

考虑具有次共形幂非线性项的半线性波动方程$$\partial_t^2 u -Δu =f(u), \quad (x,t)\in \mathbb R^N\times [0,T),\qquad (1)$$和$f(u)=|u|^{p-1}u\log^a (2+u^2)$,其中$p>1$和$a\in \mathbb R$.本文证明了方程(1)的任何奇异解的爆破速率都是由$(1)$的常微分方程解给出的。在一维空间中,这个结果已在\cite{HZjmaa2020}中得到了证明。我们的目标是将这个结果推广到更高的维度。

英文摘要:

We consider the semilinear wave equation $$\partial_t^2 u -Δu =f(u), \quad (x,t)\in \mathbb R^N\times [0,T),\qquad (1)$$ with $f(u)=|u|^{p-1}u\log^a (2+u^2)$, where $p>1$ and $a\in \mathbb R$, with subconformal power nonlinearity. We will show that the blow-up rate of any singular solution of (1) is given by the ODE solution associated with $(1)$, The result in one space dimension, has been proved in \cite{HZjmaa2020}. Our goal here is to extend this result to higher dimensions.

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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