On two properties of the numerical range of a bounded Hilbert space operator
Palabras clave:
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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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.
Cómo citar
APA
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
ACM
[1]
Rodríguez Montes, J. 1994. On two properties of the numerical range of a bounded Hilbert space operator. Revista Colombiana de Matemáticas. 28, 2 (jul. 1994), 83–91.
ACS
(1)
Rodríguez Montes, J. On two properties of the numerical range of a bounded Hilbert space operator. rev.colomb.mat 1994, 28, 83-91.
ABNT
RODRÍGUEZ MONTES, J. On two properties of the numerical range of a bounded Hilbert space operator. Revista Colombiana de Matemáticas, [S. l.], v. 28, n. 2, p. 83–91, 1994. Disponível em: https://revistas.unal.edu.co/index.php/recolma/article/view/33473. Acesso em: 13 oct. 2024.
Chicago
Rodríguez Montes, Jaime. 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.
Harvard
Rodríguez Montes, J. (1994) «On two properties of the numerical range of a bounded Hilbert space operator», Revista Colombiana de Matemáticas, 28(2), pp. 83–91. Disponible en: https://revistas.unal.edu.co/index.php/recolma/article/view/33473 (Accedido: 13 octubre 2024).
IEEE
[1]
J. Rodríguez Montes, «On two properties of the numerical range of a bounded Hilbert space operator», rev.colomb.mat, vol. 28, n.º 2, pp. 83–91, jul. 1994.
MLA
Rodríguez Montes, J. «On two properties of the numerical range of a bounded Hilbert space operator». Revista Colombiana de Matemáticas, vol. 28, n.º 2, julio de 1994, pp. 83-91, https://revistas.unal.edu.co/index.php/recolma/article/view/33473.
Turabian
Rodríguez Montes, Jaime. «On two properties of the numerical range of a bounded Hilbert space operator». Revista Colombiana de Matemáticas 28, no. 2 (julio 1, 1994): 83–91. Accedido octubre 13, 2024. https://revistas.unal.edu.co/index.php/recolma/article/view/33473.
Vancouver
1.
Rodríguez Montes J. On two properties of the numerical range of a bounded Hilbert space operator. rev.colomb.mat [Internet]. 1 de julio de 1994 [citado 13 de octubre de 2024];28(2):83-91. Disponible en: https://revistas.unal.edu.co/index.php/recolma/article/view/33473
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Derechos de autor 1994 Revista Colombiana de Matemáticas
Esta obra está bajo una licencia internacional Creative Commons Atribución 4.0.