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  1. Assertive Graphs.F. Bellucci, D. Chiffi & A.-V. Pietarinen - 2018 - Journal of Applied Non-Classical Logics 28 (1):72-91.
    Peirce and Frege both distinguished between the propositional content of an assertion and the assertion of a propositional content, but with different notational means. We present a modification of Peirce’s graphical method of logic that can be used to reason about assertions in a manner similar to Peirce’s original method. We propose a new system of Assertive Graphs, which unlike the tradition that follows Frege involves no ad hoc sign of assertion. We show that axioms of intuitionistic logic can be (...)
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