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arXiv 2602.14072math.AP
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conformal Q-曲率方程的Liouville定理

Liouville theorems for conformal $Q$-curvature equations

Meiqing Xu, Hui Yang

AI总结:

本文研究了 conformal Q-曲率方程正解的不存在性,通过统一方法建立了 Liouville 定理,解决了分数域中缺乏 ODE 工具和 Delaunay 型奇解分类的问题。

摘要:

在本文中,我们研究以下 conformal Q-曲率方程正解的不存在性:\begin{equation*} (-Δ)^σu = K(x) u^{\frac{n+2σ}{n-2σ}} \quad \text{在 } \mathbb{R}^n \text{ 中},\end{equation*}其中 $ σ\in (0, n/2)$ 是一个实数。当 $σ=1$ 时,该方程退化为著名的标量曲率方程,来源于给定标量曲率问题。对于一般的 $σ\in (0, n/2)$,它出现在给定 Q-曲率的研究中。我们通过发展一种适用于所有 $σ\in (0, n/2)$ 的统一方法,在各种关于 Q-曲率 $K(x)$ 的假设下建立了 Liouville 定理。我们的方法成功地解决了分数域中缺乏 ODE 工具以及一般分数 Yamabe 方程 Delaunay 型奇解分类的挑战。

英文摘要:

In this paper, we study the non-existence of positive solutions for the following conformal $Q$-curvature equation \begin{equation*} (-Δ)^σu = K(x) u^{\frac{n+2σ}{n-2σ}} \quad \text{in } \mathbb{R}^n, \end{equation*} where $σ\in (0, n/2)$ is a real number. When $σ=1$, this equation reduces to the well-known scalar curvature equation arising from the prescribed scalar curvature problem. For general $σ\in (0, n/2)$, it appears in the study of prescribing $Q$-curvature. We establish Liouville theorems under various assumptions on the $Q$-curvature $K(x)$ by developing a unified approach applicable to all $σ\in (0, n/2)$. Our method successfully addresses the challenges posed by the absence of ODE tools in the fractional regime and the lack of a classification of Delaunay-type singular solutions for the general fractional Yamabe equation. Moreover, in the case where $K(x)$ is sign-changing, our result improves upon that of Chen-Li (Comm. Pure Appl. Math. 1995: 657-667) even in the classical setting $σ= 1$, by removing the asymptotic assumption on the solution at infinity.

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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