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    Peirce's Triadic Logic: Modality and Continuity
    Transactions of the Charles S. Peirce Society 57 (2): 149-171. 2021.
    In early 1909, Charles S. Peirce conducted a series of experiments with three-valued logic, anticipating the pioneering work of Jan Łukasiewicz and Emil Post by ten years. These experiments are entirely contained within six or seven pages of Peirce's Logic Notebook. Due to the work of Atwell Turquette, the formalisms contained in those pages are relatively well understood. What is less understood are Peirce's philosophical reasons for conducting those experiments. His explanation of the need for…Read more