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Centers of mass for operator-families

Published online by Cambridge University Press:  18 May 2009

Makoto Takaguchi
Makoto Takaguchi
Affiliation:
Department of Mathematics, Faculty of Science, Hirosaki University, Hirosaki 036, Japan
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Let Hbe a complex Hilbert space and let B(H) be the algebra of (bounded) operators on H. Let A =(A,…,An) be an n-tuple of operators on H. The joint numerical range of A is the subset W(A) of ℂn such that

Type
Research Article
Information
Glasgow Mathematical Journal , Volume 34 , Issue 1 , January 1992 , pp. 123 - 126
Copyright
Copyright © Glasgow Mathematical Journal Trust 1992

References

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