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arXiv 0901.1368math.APmath-phmath.MP
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一个修正的临界耗散拟地转方程的整体适定性

Global Wellposedness for a Modified Critical Dissipative Quasi-Geostrophic Equation

Changxing Miao, Liutang Xue

摘要:

本文考虑修正的准地转方程\partial_{t} θ+ \cdot \nabla θ+ v |D| ^αθ=0,\quad u= |D| ^{α-1} \mathcal{R}^{\bot} θ,\quad x \in \mathbb{R}^2,其中有$ν>0$和$α\in ]0,1[\,\cup \,]1,2[$ .当$α\in]0,1[$时,该方程首先由Constantin、Iyer和Wu在\cite{ref ConstanIW}中引入。在这里,我们利用连续模的方法,证明了系统的整体适定性与光滑的初始数据。作为一个副产品,我们还表明,对于每一个$α\in ]0,2[$,Lipschitz范数的解决方案有一个统一的指数界。

英文摘要:

In this paper we consider the following modified quasi-geostrophic equation \partial_{t}θ+u\cdot\nablaθ+ν|D|^αθ=0, \quad u=|D|^{α-1}\mathcal{R}^{\bot}θ,\quad x\in\mathbb{R}^2 with $ν>0$ and $α\in ]0,1[\,\cup \,]1,2[$. When $α\in]0,1[$, the equation was firstly introduced by Constantin, Iyer and Wu in \cite{ref ConstanIW}. Here, by using the modulus of continuity method, we prove the global well-posedness of the system with the smooth initial data. As a byproduct, we also show that for every $α\in ]0,2[$, the Lipschitz norm of the solution has a uniform exponential bound.

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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