Publicado

1994-07-01

On two properties of the numerical range of a bounded Hilbert space operator

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Hilbert and pre-Hilbert spaces, bounded, self-adjoint and normal operators, interior of a set, numerical range and spectrum of an operator, functions of class C1. (es)

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Autores/as

  • Jaime Rodríguez Montes Universidad Nacional de Colombia

Necessary and sufficient conditions are given for the numerical range of a bounded Hilbert space operator to have an empty interior. A sufficient condition for this set to be open is also established.

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Cómo citar

Rodríguez Montes, J. (1994). On two properties of the numerical range of a bounded Hilbert space operator. Revista Colombiana De Matemáticas, 28(2), 83-91. https://revistas.unal.edu.co/index.php/recolma/article/view/33473