Sign-changing bubble tower solutions for a Paneitz-type problem

Wenjing Chen, Xiaomeng Huang

This paper is concerned with the following biharmonic problem \begin{equation}\label{ineq} \begin{cases} Δ^2 u=|u|^{\frac{8}{N-4}}u &\text{ in } \ Ω\backslash \overline{B(ξ_0,\vare…