Existence of positive solutions for integral systems of the weighted Hardy-Littlewood-Sobolev type

Existence of positive solutions for integral systems of the weighted Hardy-Littlewood-Sobolev type
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加权 Hardy-Littlewood-Sobolev 型积分系统正解的存在性

DOI:
10.3934/dcds.2020018
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发表时间:
2020
影响因子:
1.1
通讯作者:
Lei Yutian
Lei Yutian
中科院分区:
数学3区
文献类型:
--
作者:
Liu Xiaoqian;Lei Yutian

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研究一类加权Hardy-Littlewood-Sobolev型积分系统正解的存在性与不存在性.这样的系统与加权Hardy-Littlewood-Sobolev不等式的极值函数有关。Serrin型条件是\开始{document}$ L_{loc}^\infty(R^n \setminus \{0\})$\end{document}正解存在的关键条件。当Serrin型条件不成立时,我们通过迭代过程证明了其不存在性。此外,我们发现了三对径向解时,塞林型条件成立。一个是奇异的,另外两个是在\开始{document}$ R^n $\end{document}中可积的,分别衰减快和慢。
This paper is concerned with the existence/nonexistence of positive solutions of a weighted Hardy-Littlewood-Sobolev type integral system. Such a system is related to the extremal functions of the weighted Hardy-Littlewood-Sobolev inequality. The Serrin-type condition is critical for existence of positive solutions in \begin{document}$ L_{loc}^\infty(R^n \setminus \{0\}) $\end{document} . When the Serrin-type condition does not hold, we prove the nonexistence by an iteration process. In addition, we find three pairs of radial solutions when the Serrin-type condition holds. One is singular, and the other two are integrable in \begin{document}$ R^n $\end{document} and decaying fast and slowly respectively.
双加权 Hardy-Littlewood-Sobolev 不等式中的锐常数
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