Advances in Difference Equations
Volume 2009 (2009), Article ID 347291, 18 pages
doi:10.1155/2009/347291
  
     
          
          Inequalities among eigenvalues of second-order difference equations with general coupled boundary conditions
          
            Chao Zhang
             and Shurong Sun
          
          School of Science, University of Jinan, Jinan, Shandong 250022, China
          
          Abstract
This paper studies general coupled boundary value problems for second-order difference equations. Existence of eigenvalues is proved, numbers of their eigenvalues are calculated, and their relationships between the eigenvalues of second-order difference equation with three different coupled boundary conditions are established.