Results 61 to 70 of about 499 (74)

The joint essential numerical range of operators: convexity and related results

, 2009
Chi-Kwong Li, Y. Poon
semanticscholar   +1 more source

NUMERICAL INDEX AND THE DAUGAVET PROPERTY FOR $L_\infty(\mu,X)$

Proceedings of the Edinburgh Mathematical Society, 2003
Armando R. Villena
semanticscholar   +1 more source

Product of operators and numerical range preserving maps

, 2006
Chi-Kwong Li, Nung-Sing Sze
semanticscholar   +1 more source

Spectraloid operator polynomials, the approximate numerical range and an Eneström–Kakeya theorem in Hilbert space

, 2010
J. Swoboda, H. K. Wimmer
semanticscholar   +1 more source

Characterization of the norm triangle equality in pre-Hilbert C✻-modules and applications

, 2009
R. Rajić
semanticscholar   +1 more source

Higher-rank numerical range in infinite-dimensional Hilbert space

, 2008
R. Martínez-Avendaño
semanticscholar   +1 more source

A Version of James' Theorem for Numerical Radius

, 1999
M. Acosta, M. R. Galán
semanticscholar   +1 more source

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Power Inequalities for the Numerical Radius of a Product of Two Operators in Hilbert Spaces

Sarajevo Journal of Mathematics
Some power inequalities for the numerical radius of a product of two operators in Hilbert spaces with applications for commutators and self-commutators are given.   2000 Mathematics Subject Classification.
S. Dragomir
semanticscholar   +1 more source

Non‐Self‐Adjoint Differential Operators

, 2002
E. Davies
semanticscholar   +1 more source

On numerical radius of some matrices

, 2018
S. G. Dastidar, G. H. Bera
semanticscholar   +1 more source