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Abstract
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It is shown that the
numerical index d∗(α) of a semigroup α of ∗-endomorphisms of B(H) obeys the
logarithmic addition formula
The proof makes essential use of the theory of continuous product
systems
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Mathematical Subject Classification 2000
Primary: 47D25, 47D25
Secondary: 46L99, 47D05
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Milestones
Received: 15 March 1988
Published: 1 March 1989
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