School of Mathematics and Computer Sciences, Fujian Normal University, Fuzhou 350007, China
Copyright © 2009 Chen Yu and Li Yongqing. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
We consider a similinear elliptic equation with sign-changing potential , , where is a function possibly changing sign in . Under certain assumptions on , we prove that the equation has infinitely many solutions.