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Article Dans Une Revue Journal of Operator Theory Année : 2023

Self-adjoint Jacobi operators in the limit circle case

Résumé

We consider symmetric Jacobi operators with recurrence coefficients such that the corresponding difference equation is in the limit circle case. Equivalently, this means that the associated moment problem is indeterminate. Our main goal is to find a representation for the resolvents of self-adjoint realizations $J$ of such Jacobi operators. This representation implies the classical Nevanlinna formula for the Cauchy-Stieltjes transforms of the spectral measures of the operators $J$. We also efficiently describe domains of the operators $J$ in terms of boundary conditions at infinity.

Dates et versions

hal-03509360 , version 1 (04-01-2022)

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D. R. Yafaev. Self-adjoint Jacobi operators in the limit circle case. Journal of Operator Theory, 2023, 89 (1), pp.87-103. ⟨hal-03509360⟩
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