Stability of determinacy and inverse spectral problems for Jacobi operators
Stability of determinacy and inverse spectral problems for Jacobi operators
This work studies the interplay between Green functions, the index of determinacy of spectral measures and interior finite rank perturbations of Jacobi operators.The index of determinacy quantifies the stability of uniqueness of solutions of the moment problem.We give results on the constancy of this index in terms of perturbations of …