On a Question of Bratteli and Robinson

Aernout van Enter

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4 Citations (Scopus)


We give a partial answer to a question raised by Bratteli and Robinson, by showing that the mean entropy equals the mean conditional entropy for a large class of translation invariant states. In the general case we show that equality holds if and only if the mean conditional entropy is upper semicontinuous in the w*-topology.
Original languageEnglish
Pages (from-to)289-291
Number of pages3
JournalLetters in Mathematical Physics
Issue number4
Publication statusPublished - 1982

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