Least energy sign-changing solutions for discrete Kirchhoff-type problems

On homoclinic solutions of nonlinear Laplacian partial difference equations with a parameter

“…For instance, by the Morse theory, the author provided multiple existence results of a discrete Kirchhoff-type Dirichlet boundary value problem [10]. Long revisited discrete Kirchhoff-type problems and gave results on infinitely many solutions [11,13] and least energy sign-changing solutions [12]. In [15], Mei and Zhou gave results on homoclinic solutions for partial difference equations with mixed nonlinearities.…”