On two properties of the numerical range of a bounded Hilbert space operator
Schlagworte:
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.
Zitationsvorschlag
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 (Juli 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 okt. 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), S. 83–91. Verfügbar unter: https://revistas.unal.edu.co/index.php/recolma/article/view/33473 (Zugegriffen: 13 Oktober 2024).
IEEE
[1]
J. Rodríguez Montes, „On two properties of the numerical range of a bounded Hilbert space operator“, rev.colomb.mat, Bd. 28, Nr. 2, S. 83–91, Juli 1994.
MLA
Rodríguez Montes, J. „On two properties of the numerical range of a bounded Hilbert space operator“. Revista Colombiana de Matemáticas, Bd. 28, Nr. 2, Juli 1994, S. 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 (Juli 1, 1994): 83–91. Zugegriffen Oktober 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. Juli 1994 [zitiert 13. Oktober 2024];28(2):83-91. Verfügbar unter: https://revistas.unal.edu.co/index.php/recolma/article/view/33473
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