Results 91 to 99 of about 865 (99)

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

A Version of James' Theorem for Numerical Radius

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

Some of the next articles are maybe not open access.

Related searches:

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

On numerical radius of some matrices

, 2018
In this paper we obtain numerical radius of a general complex matrix of order two without reducing it in triangular form. We also find numerical radius of nilpotent matrix of order three and different matrices of order three and four satisfying special ...
S. G. Dastidar, G. H. Bera
semanticscholar   +1 more source

Elliptic numerical range of 5x5 matrices

, 2017
In this paper we give necessary and sufficient conditions for the numerical range of a 5 × 5 matrix to be a convex hull of three points and one ellipse or one point and two ellipses. We also find sufficient conditions for which the numerical range of a 5×
S. G. Dastidar, G. H. Bera
semanticscholar   +1 more source

A Note on Triangle Equality for C ∗ -Seminorms and Positive Linear Functionals on Banach ∗-Modules

, 2013
Let X be a semi-inner product module over a Banach ∗-algebra A and γ a C ∗ -seminorm or a positive linear functional on A, we define a real function Γ on X by Γ(x )=( γ( x, x )) 1/2 .
A. Ghazanfari, B. Ghazanfari
semanticscholar   +1 more source

PERRON-FROBENIUS THEORY ON THE NUMERICAL RANGE FOR SOME CLASSES OF REAL MATRICES

, 2013
We give further results for Perron-Frobenius theory on the numerical range of real matrices and some other results generalized from nonnegative matrices to real matrices.
Mostafa Zangiabadi, H. Afshin
semanticscholar   +1 more source

Non‐Self‐Adjoint Differential Operators

, 2002
E. Davies
semanticscholar   +1 more source

The Place of ψυχή in Plato’s Crito

, 2015
Y. Liebersohn
semanticscholar   +1 more source