摘要

In this paper, we are concerned with the weighted elliptic system {-Delta u = vertical bar x vertical bar(beta)upsilon(upsilon) -Delta u = vertical bar x vertical bar(alpha) vertical bar u vertical bar(p-1)u, in R-N where N >= 5, alpha > -4, 0 <= beta < N - 4, p > 1 and upsilon = 1. We first apply Pohozaev identity to construct a monotonicity formula and reveal their certain equivalence relation. By the use of Pohozaev identity, mono tonicity formula of solutions together with a blowing down sequence, we prove Liouville-type theorems for stable solutions (whether positive or sign-changing) of the weighted elliptic system in the higher dimension.