Acta mathematica scientia,Series A ›› 2026, Vol. 46 ›› Issue (4): 1548-1553.

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A Class of Liouville-Type Theorem for Fractional Elliptic Equations

Qing Ren1(), Xian Yang2,*()   

  1. 1 Guangxi Technological College of Machinery and Electricity, Nanning 530007
    2 School of Mathematics & Center for Applied Mathematics of Guangxi (Guangxi University), Nanning 530004
  • Received:2026-01-04 Revised:2026-01-19 Online:2026-08-26 Published:2026-06-10
  • Contact: Xian Yang E-mail:renqing@gxcme.edu.cn;yangxian@gxu.edu.cn
  • Supported by:
    NSFC(12501136)

Abstract:

In this paper, we study the following fractional equation

$ (-\Delta)^su=\chi_Hf(u)+g(u),2, \quad x\in{\mathbb{R}}^{N}, $

where $s\in[\frac{1}{2}, 1)$, $N\ge2$, $f,g\in C(\mathbb{R},\mathbb{R})$, $\chi_H$ is the characteristic function of a half space $H$ in ${\mathbb{R}}^{N}$. Under some loose and natural conditions on $f$ and $g$, we show that ($\mathcal{P}$) admits no nontrivial nonnegative weak solution in $H^s({\mathbb{R}}^{N})$. We do not require strong regularity assumptions on the solutions we study.

Key words: fractional elliptic equations, Liouville theorem, half space, weak solutions

CLC Number: 

  • O175.2
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