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arXiv 1107.0435math.APmath-phmath.MP
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三维不可压Euler方程爆破速率的下界和单指数Beale-Kato-Majda型估计

A lower bound on blowup rates for the 3D incompressible Euler equation and a single exponential Beale-Kato-Majda type estimate

Thomas Chen, Nataša Pavlović

摘要:

我们证明了一个Beale-Kato-Majda型准则的正则性损失的解决方案的不可压缩欧拉方程$H^{s}({\mathbb R}^3)$,$s>\frac52$。代替Beale-Kato-Majda型的双指数估计,我们得到了包含P.Constantin在\cite{co1}中引入的长度参数的$\|u(t)\|_{H^s}$的单指数界.特别地,我们得到了此类解的爆破速率的下界。

英文摘要:

We prove a Beale-Kato-Majda type criterion for the loss of regularity for solutions of the incompressible Euler equations in $H^{s}({\mathbb R}^3)$, for $s>\frac52$. Instead of double exponential estimates of Beale-Kato-Majda type, we obtain a single exponential bound on $\|u(t)\|_{H^s}$ involving the length parameter introduced by P. Constantin in \cite{co1}. In particular, we derive lower bounds on the blowup rate of such solutions.

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