Title of article
Convex numerical radius
Author/Authors
Ruiz Galلn، نويسنده , , Manuel، نويسنده ,
Issue Information
دوهفته نامه با شماره پیاپی سال 2010
Pages
11
From page
481
To page
491
Abstract
In this work we introduce the concept of convex numerical radius for a continuous and linear operator in a Banach space, which generalizes that of the classical numerical radius. Besides studying some of its properties, we give a version of Jamesʹs sup theorem in terms of convex numerical radius attaining operators.
Keywords
Numerical radius , Subdifferential of a convex function , Jamesיs sup theorem , Bishop–Phelps theorem
Journal title
Journal of Mathematical Analysis and Applications
Serial Year
2010
Journal title
Journal of Mathematical Analysis and Applications
Record number
1560644
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