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math.SP2008★ 23 cited
Relative Oscillation Theory for Jacobi Matrices
Kerstin Ammann, Gerald Teschl
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 e…
nlin.SI2008★ 4 cited
Stability of the Periodic Toda Lattice: Higher Order Asymptotics
Spyridon Kamvissis, Gerald Teschl
In a recent paper we have considered the long time asymptotics of the periodic Toda lattice under a short range perturbation and we have proved that the perturbed lattice asymptoti…