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Spectral radius formulae

Published online by Cambridge University Press:  20 January 2009

G. J. Murphy  and
T. T. West
G. J. Murphy
Affiliation:
School of Mathematics, Trinity College, Dublin
T. T. West
Affiliation:
School of Mathematics, Trinity College, Dublin
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If A is a complex Banach algebra (not necessarily unital) and x∈A, σ(x) will denote the spectrum and spectral radius of x in A. If I is a closed two-sided ideal in A let x + I denote the coset in the quotient algebra A/I containing x. Then

Type
Research Article
Information
Proceedings of the Edinburgh Mathematical Society , Volume 22 , Issue 3 , October 1979 , pp. 271 - 275
Copyright
Copyright © Edinburgh Mathematical Society 1979

References

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