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https://deepai.org/publication/a-van-benthem-theorem-for-fuzzy-modal-logic A van Benthem Theorem for Fuzzy Modal Logic | DeepAI Feb 1, 2018 - 02/01/18 - We present a fuzzy (or quantitative) version of the van Benthem theorem, which characterizes propositional modal logic as the bisi... fuzzy modal logicvan benthemtheoremdeepai