Acta mathematica scientia,Series A ›› 2023, Vol. 43 ›› Issue (5): 1391-1396.

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Global Bifurcation for the Yamabe Equation on the Unit Sphere

Dai Guowei1,*(),Gao Siyu1,Ma Ruyun2   

  1. 1School of Mathematical Sciences, Dalian University of Technology, Liaoning Dalian 116024
    2School of Mathematical and Statistics, Xidian University, Xi'an 710071
  • Received:2022-08-14 Revised:2023-03-23 Online:2023-10-26 Published:2023-08-09
  • Contact: Guowei Dai E-mail:daiguowei@dlut.edu.cn
  • Supported by:
    NSFC(11871129)

Abstract:

We study the Yamabe equation on the $N$-dimensional unit sphere $\mathbb{S}^N$

$\begin{equation} -\Delta_{\mathbb{S}^N} v+\lambda v=v^{\frac{N+2}{N-2}}.\nonumber \end{equation}$

By bifurcation technique, for each $k\geq1$, we prove that this equation has at least one non-constant solution $v_k$ for any $\lambda>\lambda_k:=(k+N-1)(N-2)/4$ such that $v_k-\lambda^{1/(N^{*}-1)}$ has exactly $k$ zeroes, all of them are in $(-1, 1)$ and are simple, where $N^{*}$ is the sobolev critical exponent. As application, we obtain the existence of non-radial solutions of a nonlinear elliptic equation on $\mathbb{R}^N$ with $n\geq4$. Moreover, we also obtain the global bifurcation results of the Yamabe problem in product manifolds with one of the manifold is the unit sphere.

Key words: Bifurcation, Yamabe equation, Non-radial solutions

CLC Number: 

  • O177.91
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