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9.—On Relatively Bounded Perturbations

  • K. J. Brown (a1)


In this note it will be proved that any small relatively bounded perturbation of a self-adjoint operator with discrete spectrum also has discrete spectrum.



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Kato, T., 1966. Perturbation Theory for Linear Operators. Berlin: Springer-Verlag.
Maurin, K., 1967. Methods of Hilbert Spaces. Warsaw: Polish Scientific Publishers.


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