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arXiv 1409.5892math.AP
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关于De Giorgi关于均匀化的一个猜想

On a conjecture of De Giorgi related to homogenization

Aram Karakhanyan, Henrik Shahgholian

摘要:

对于一个周期向量场$\bf F$,让${\bf X}^ε$解决动力系统\begin{equation*} \frac{d{\bf X}^ε}{dt} = {\bf F}\left(\frac {{\bf X}^ε}ε\right) . \end{equation*}在\cite{DeGiorgi}恩尼奥德乔治询问是否从存在的限制${\bf X}^0(t):=\lim\limits_{ε\to 0}{\bf X}^ε(t)$可以得出结论,$ \frac{d{\bf X}^0}{dt}= constant$。我们的主要结果解决了这个猜想下相当一般的假设$\bf F$,这也可能取决于$t$ -变量。一旦上述问题得到解决,人们就可以将结果以标准的方式应用于输运方程。这一点在下文中也有所涉及。

英文摘要:

For a periodic vector field $\bf F$, let ${\bf X}^ε$ solve the dynamical system \begin{equation*} \frac{d{\bf X}^ε}{dt} = {\bf F}\left(\frac {{\bf X}^ε}ε\right) . \end{equation*} In \cite{DeGiorgi} Ennio De Giorgi enquiers whether from the existence of the limit ${\bf X}^0(t):=\lim\limits_{ε\to 0}{\bf X}^ε(t)$ one can conclude that $ \frac{d{\bf X}^0}{dt}= constant$. Our main result settles this conjecture under fairly general assumptions on $\bf F$, which may also depend on $t$-variable. Once the above problem is solved, one can apply the result to the transport equation, in a standard way. This is also touched upon in the text to follow.

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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