Tuhai H. V.
Jacobi matrices associated with the inverse eigenvalue problem in the theory of singular perturbations of self-adjoint operators
Ukr. Mat. Zh. - 2006. - 58, № 12. - pp. 1651–1662
We establish the relationship between the inverse eigenvalue problem and Jacobi matrices within the framework of the theory of singular perturbations of unbounded self-adjoint operators.
Ukr. Mat. Zh. - 2004. - 56, № 9. - pp. 1292-1297
We investigate the structure of the resolvent of a singularly perturbed operator of finite rank that solves an eigenvalue problem.