Sign-Changing Solutions for Discrete Dirichlet Boundary Value Problem

Yuhua Long, Baoling Zeng
2017 Journal of Applied Mathematics and Physics  
Using invariant sets of descending flow and variational methods, we establish some sufficient conditions on the existence of sign-changing solutions, positive solutions and negative solutions for second-order nonlinear difference equations with Dirichlet boundary value problem. Some results in the literature are improved.
doi:10.4236/jamp.2017.511182 fatcat:fgszz5izf5gnzp4scmjeueq7uy