Copyright © 2011 Bo Zheng et al. 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.
By using critical point theory, Lyapunov-Schmidt reduction method, and characterization of the Brouwer
degree of critical points, sufficient conditions to guarantee the existence of five or six solutions together with
their sign properties to discrete second-order two-point boundary value problem are obtained. An example is
also given to demonstrate our main result.