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On Numerical Radius and Crawford Number Attainment Sets of a Bounded Linear Operator

Sain, D and Mal, A and Bhunia, P and Paul, K (2021) On Numerical Radius and Crawford Number Attainment Sets of a Bounded Linear Operator. In: Journal of Convex Analysis, 28 (1). pp. 67-80.

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Abstract

We completely characterize the Crawford number attainment set and the numerical radius attainment set of a bounded linear operator on a Hilbert space. We study the intersection properties of the corresponding attainment sets of numerical radius, Crawford number, norm, minimum norm of a bounded linear operator defined on a normed space. Our study illustrates the similarities and the differences of the extremal properties of a bounded linear operator on a Hilbert space and a general normed space. © Heldermann Verlag

Item Type: Journal Article
Publication: Journal of Convex Analysis
Publisher: Heldermann Verlag
Additional Information: This copyright for this article belongs to Heldermann Verlag
Keywords: Bounded linear operator; Crawford number; Norm attainment set; Numerical radius Bounded linear operator; Crawford number; Norm attainment set; Numerical radius Bounded linear operator; Crawford number; Norm attainment set; Numerical radius Bounded linear operator; Crawford number; Norm attainment set; Numerical radius Bounded linear operator; Crawford number; Norm attainment set; Numerical radius
Department/Centre: Division of Physical & Mathematical Sciences > Mathematics
Date Deposited: 30 Dec 2021 05:10
Last Modified: 30 Dec 2021 05:10
URI: http://eprints.iisc.ac.in/id/eprint/67960

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