Kerstin Ammann and Gerald Teschl
Relative Oscillation Theory for Jacobi Matrices
(25K, LaTeX2e)

ABSTRACT.  We develop relative oscillation theory for Jacobi matrices 
which, rather than counting the number of eigenvalues of one single matrix, counts the 
difference between the number of eigenvalues of two different matrices. 
This is done by replacing nodes of solutions associated with one matrix by weighted nodes of Wronskians of 
solutions of two different matrices.