Means of unitary operators, revisited

Authors

  • Uffe Haagerup
  • Richard V. Kadison
  • Gert K. Pedersen

DOI:

https://doi.org/10.7146/math.scand.a-15021

Abstract

It is proved that an operator with bound not exceeding $(n-2)n^{-1}$ in a $C^*$-algebra is the mean of $n$ unitay operators in that algebra.

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Published

2007-06-01

Issue

Vol. 100 No. 2 (2007)

Section

Articles

How to Cite

[1]
U. Haagerup, R. V. Kadison, and G. K. Pedersen, “Means of unitary operators, revisited”, Math. Scand., vol. 100, no. 2, pp. 193–197, Jun. 2007, doi: 10.7146/math.scand.a-15021.