Point mass perturbations of spectral measures

del Rio, Rafael; Silva, Luis O.; Toloza, Julio Hugo

info:eu-repo/semantics/article

Fecha

2021-08-05

Registro en:

del Rio, Rafael; Silva, Luis O.; Toloza, Julio Hugo; Point mass perturbations of spectral measures; Rocky Mountain Mathematics Consortium; Rocky Mountain Journal Of Mathematics; 51; 4; 5-8-2021; 1407-1432

0035-7596

http://hdl.handle.net/11336/140298

CONICET Digital

CONICET

https://repositorioslatinoamericanos.uchile.cl/handle/2250/4410476

Autor

del Rio, Rafael

Silva, Luis O.

Toloza, Julio Hugo

Institución

Consejo Nacional de Investigaciones Científicas y Tecnológicas (Argentina)

Resumen

Using a generalization of the moment problem and the extremal properties of spectral measures corresponding to the self-adjoint extensions of a regular symmetric operator, we study point mass perturbations of spectral measures. We obtain general results for a wide class of operators and apply them to the analysis of point mass perturbations of spectral measures pertaining to Bessel and generalized Schrödinger operators.

Materias

SPECTRAL MEASURES

DE BRANGES SPACES

PERTURBATIONS OF MEASURES

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