IV: 11, 132-132, LNM 124 (1970)
SAM LAZARO, José de
Théorème de Stone et espérances conditionnelles (
Ergodic theory)
It is shown that the spectral projections of the unitary group arising from a group of measure preserving transformations must be complex operators, and in particular cannot be conditional expectations
Comment: This remark arose from the work on flows in Sam Lazaro-Meyer,
Z. für W-theorie, 18, 1971
Keywords: Flows,
Spectral representationNature: Original
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