A short note on relative entropy for a pair of intermediate subfactors
arXiv:2105.03914
Abstract
Given a quadruple of finite index subfactors we explicitly compute the Pimsner-Popa probabilistic constant for the pair of intermediate subfactors and relate it with the corresponding Connes-Størmer relative entropy between them. This generalizes an old result of Pimsner and Popa.
arXiv comment13 pages. To appear in PAMS