On Delaunay solutions of a biharmonic elliptic equation with critical exponent

Zongming Guo, Xia Huang, Liping Wang +1

We are interested in the qualitative properties of positive entire solutions $u\in C^4({\mathbb{R}}^n\backslash \{0\})$ of the equation \begin{equation} \label{0.0} Δ^2 u=u^{\frac…