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Start Over Author "Conde, Cristian" Topic 47a30
9 results on '"Conde, Cristian"'

6. Numerical radii of operator matrices in terms of certain complex combinations of operators.

Author

Conde, Cristian, Kittaneh, Fuad, Moradi, Hamid Reza, and Sababheh, Mohammad

Abstract

Operator matrices have played a significant role in the study of properties of the numerical radii of Hilbert space operators. This paper presents several new sharp upper bounds for the numerical radii of operator matrices in terms of certain complex combinations. The obtained results reveal many interesting properties of the numerical radius. [ABSTRACT FROM AUTHOR]

Published
2024
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7. Generalized Euclidean operator radius.

Author

Alomari, Mohammad W., Sababheh, Mohammad, Conde, Cristian, and Moradi, Hamid Reza

Subjects
HILBERT space, CONVEX functions, GENERALIZATION, RADIUS (Geometry)
Abstract

In this paper, we introduce the f-operator radius of Hilbert space operators as a generalization of the Euclidean operator radius and the q-operator radius. The properties of the newly defined radius are discussed, emphasizing how it extends some known results in the literature. [ABSTRACT FROM AUTHOR]

Published
2024
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9. Norm inequalities related to p-Schatten class.

Author

Conde, Cristian and Moslehian, Mohammad Sal

Subjects
*MATHEMATICAL inequalities, *ALGEBRA, *MATRICES (Mathematics), *ESTIMATION theory, *SET theory
Abstract

In this paper, we obtain some refinements of the known operator inequalities for the p -Schatten class. In addition, we obtain an approach to the inequalities conjectured by Audenaert and Kittaneh for the p -Schatten class. [ABSTRACT FROM AUTHOR]

Published
2016
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