On the classification of solutions to a weighted elliptic system involving the Grushin operator

Abstract

We investigate here the following weighted degenerate elliptic system \begin{align*} -\Delta_{s} u = \Big(1+\|\mathbf{x}\|^{2(s+1)}\Big)^{\frac{\alpha}{2(s+1)}} v^p, \quad -\Delta_{s} v = \Big(1+\|\mathbf{x}\|^{2(s+1)}\Big)^{\frac{\alpha}{2(s+1)}}u^\theta, \quad u,v>0\quad\mbox{in }\; \mathbb{R}^N:=\mathbb{R}^{N_1}\times \mathbb{R}^{N_2}. \end{align*} where $\Delta_{s}=\Delta_{x}+|x|^{2s}\Delta_{y},$ is the Grushin operator, $s \geq 0,$ $\alpha \geq 0$ and $1 0 \quad \mbox{in }\;\; \mathbb{R}^N. \end{align*}