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Boundary Points of the Numerical Range of an Operator

Published online by Cambridge University Press:  20 November 2018

C.-S. Lin
C.-S. Lin*
Affiliation:
University of New Brunswick, Fredericton, N.B.
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The purpose of this note is to investigate boundary points of the numerical range of an operator in terms of inner and outer center points. Some applications on commutators are given.

Throughout this note, an operator will always mean a bounded linear operator on a Hilbert space X.

Information

Type
Research Article
Information
Canadian Mathematical Bulletin , Volume 17 , Issue 5 , February 1975 , pp. 689 - 692
Copyright
Copyright © Canadian Mathematical Society 1975

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