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math.SP2013
Spectral theory of the G-symmetric tridiagonal matrices related to Stahl's counterexample
Maxim Derevyagin
We recast Stahl's counterexample from the point of view of the spectral theory of the underlying non-symmetric Jacobi matrices. In particular, it is shown that these matrices are s…
math.SP2008
Generalized Jacobi operators in Krein spaces
Maxim Derevyagin
A special class of generalized Jacobi operators which are self-adjoint in Krein spaces is presented. A description of the resolvent set of such operators in terms of solutions of t…