R Ma,
C Gao - Discrete Dynamics in Nature and Society, 2014 - Wiley Online Library
Let T> 1 be an integer, and let𝕋={1, 2,…, T}. We discuss the spectrum of discrete linear
second‐order eigenvalue problems Δ2u (t− 1)+ λm (t) u (t)= 0, t∈ 𝕋, u (0)= u (T+ 1)= 0 …