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arXiv 1102.5661math.APmath.FA
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Hardy不等式的功能方面。隐藏能量的出现

Functional aspects of the Hardy inequality. Appearance of a hidden energy

J. L. Vázquez, N. B. Zographopoulos

摘要:

从Vázquez和Zuazua的论文\cite{vz00}中出现的一个功能性困难开始,我们通过对问题的重新表述,获得了对Hardy不等式及其相关演化问题的新见解。令人惊讶的是,连接的能量与标准的哈代功能的新配方是不平凡的,由于存在的哈代奇点能量。这相当于总能量的损失。问题出现时,方程是在一个有界域,也提出了在整个空间。我们还考虑了一个在外部区域上具有平方反比势的等价问题。额外的能量项则表现为来自无穷大的效应,一种隐藏的能量。在这种情况下,以一种意想不到的方式,这项是总能量的附加项,它甚至可能构成总能量的主要部分。

英文摘要:

Starting with a functional difficulty appeared in the paper \cite{vz00} by Vázquez and Zuazua, we obtain new insights into the Hardy Inequality and the evolution problem associated to it by means of a reformulation of the problem. Surprisingly, the connection of the energy of the new formulation with the standard Hardy functional is nontrivial, due to the presence of a Hardy singularity energy. This corresponds to a loss for the total energy. The problem arises when the equation is posed in a bounded domain, and also when posed in the whole space. We also consider an equivalent problem with inverse square potential on an exterior domain. The extra energy term is then present as an effect that comes from infinity, a kind of hidden energy. In this case, in an unexpected way, this term is additive to the total energy, and it may even constitute the main part of it.

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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