Means of unitary operators, revisited

• Autores: Uffe Haagerup, Richard V. Kadison, Gert K. Pedersen
• Localización: Mathematica scandinavica, ISSN 0025-5521, Vol. 100, Nº 2, 2007, págs. 193-197
• Idioma: inglés
• DOI: 10.7146/math.scand.a-15021
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• Resumen

  • 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.