On Weyl-Titchmarsh Theory for Singular Finite Difference Hamiltonian Systems
arXiv:math/0312177
Abstract
We develop the basic theory of matrix-valued Weyl-Titchmarsh M-functions and the associated Green's matrices for whole-line and half-line self-adjoint Hamiltonian finite difference systems with separated boundary conditions.
30 pages, to appear in J. Comput. Appl. Math