该文研究椭圆型方程{-△pu+m|u|^p-2u-△qu+n|u|^q-2 u=g(x,u), x∈R^N, u∈W^1,p (R^N)∩W^-,q(R^N) 弱解在全空间R^N上的衰减性,其中m,n≥0,N≥3,1〈q〈P〈N,g(x,u)关于u满足类渐近线性.证明了该方程的弱解在无穷远处关于|x|呈指数衰减性.
In this paper, the authors study the following equation {-△pu+m|u|^p-2u-△qu+n|u|^q-2 u=g(x,u), x∈R^N, u∈W^1,p (R^N)∩W^-,q(R^N) where m, n 〉 0, N 〉 3, 1 〈 q 〈 p 〈 N and g(x, u) satisfies some kind of asymptotic about u at infinity. They prove that the solution of this equation decays exponentially aoubt |x| at infinity.