Jensen's inequality for conditional expectations
classification
🧮 math.OA
keywords
conditionalexpectationsinequalityjensenabeliancentralizercorollaryexpectation
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We study conditional expectations generated by an abelian $ C^* $-subalgebra in the centralizer of a positive functional. We formulate and prove Jensen's inequality for functions of several variables with respect to this type of conditional expectations, and we obtain as a corollary Jensen's inequality for expectation values.
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