Every sum system is divisible
classification
🧮 math.OA
math.FA
keywords
systemeverytypedivisibleproductarisingbhatcombined
read the original abstract
We show that every sum system is divisible. Combined with B. V. R. Bhat and R. Srinivasan's result, this shows that every product system arising from a sum system (and every generalized CCR flow) is either of type I or type III. A necessarily and sufficient condition for such a product system to be of type I is obtained.
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