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arXiv 2211.14616math.AP
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加权索伯列夫空间与双曲拉普拉斯方程I

Weighted Sobolev Space and Hyperbolic Laplacian Equations I

Fei Fang, Zhong Tan, Huiru Xiong

摘要:

本文在双曲空间$\mathbb{B}^N$中考虑以下问题:\begin{equation*} -Δ_{\mathbb{B}^N} u=f(x,u), \mathrm{in} \ \mathbb{B}^N.\eqno{(1)} \end{equation*}其中,$Δ_{\mathbb{B}^N}$表示$\mathbb{B}^N$上的Laplace Beltrami算子.然后,通过研究问题(2)解的存在性,可以得到问题(1)解的存在性。我们将问题(2)赋予一个加权索伯列夫空间,并证明了加权索伯列夫空间的紧嵌入定理和集中紧原理。我们将证明最大值原理对算子$-\operatorname{div}(K(x) \nabla u)$成立。当$f(x,u)=|u|^{2^*-2} u+λu^{q-2}u$,$λ>0$,$1<q<2^{\ast}$,利用变分方法,紧嵌入定理,集中紧性原理和极大值原理,得到了问题(2)非径向解的存在性.

英文摘要:

In this paper, the following problem in the hyperbolic space $\mathbb{B}^N$ will be considered \begin{equation*} -Δ_{\mathbb{B}^N} u=f(x,u), \mathrm{in} \ \mathbb{B}^N.\eqno{(1)} \end{equation*} where, $Δ_{\mathbb{B}^N}$ denotes the Laplace Beltrami operator on $\mathbb{B}^N$. And this problem can be converted into the following Euclidean problem \begin{equation*} \begin{cases} -\operatorname{div}(K(x) \nabla u)=4 K(x)^{\frac{N}{N-2}}f(x,u), &\mathrm{in} \ \mathbb{B}^N, \\ u(0)=0, &\mathrm{on}\ \partial\mathbb{B}^N, \end{cases}\eqno{(2)} \end{equation*} where, $K(x):=1/\left(1-|x|^2\right)^{N-2}.$ Then, the existence of solution of problem (1) can be obtained by studying the existence of solution of problem (2). We will equip problem (2) with a weighted Sobolev space and prove the compact embedding theorem and the concentration compactness principle for the weighted Sobolev space. And we will prove that the maximum principle holds for the operator $-\operatorname{div}(K(x) \nabla u)$. When $f(x,u)=|u|^{2^*-2} u+λu^{q-2}u$, $λ>0$, $1<q<2^{\ast}$, using the variational method, the compact embedding theorem, the concentration compactness principle and the maximum principle, the existence of nonradial solutions of problem (2) will be obtained.

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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