On the shape of solutions to an integral system related to the weighted Hardy-Littlewood-Sobolev inequality

摘要

We study the Euler-Lagrange system for a variational problem associated with the weighted Hardy-Littlewood-Sobolev inequality. We show that all the nonnegative solutions to the system are radially symmetric and have particular profiles around the origin and the infinity. This paper extends previous results obtained by other authors to the general case.