Isolated Singularities of Polyharmonic Operator in Even Dimension

Dhanya Rajendran, Abhishek Sarkar

We consider the equation ${\Delta }^{2}u=g(x,u)\ge 0$ in the sense of distribution in ${\Omega }^{\prime }=\Omega \setminus \{0\}$ where $u$ and $-\Delta u\ge 0.$ Then it is known that $u$ solves $Δ^2 u=g(x,u)+αδ_…