Existential graph

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Part of a series on
Charles Sanders Peirce
Bibliography
Pragmatism in epistemology
Abductive reasoning Fallibilism Pragmaticism as maxim as theory of truth Community of inquiry
Logic
Continuous predicate Peirce's law Entitative graph in Qualitative logic Existential graph Functional completeness Logic gate Logic of information Logical graph Logical NOR Second-order logic Trikonic Type-token distinction
Semiotic theory
Indexicality Interpretant Semiosis Sign relation Universal rhetoric
Miscellaneous contributions
Agapism Bell triangle Categories Phaneron Synechism Tychism Classification of sciences Listing number Quincuncial projection
Biographical
Joseph Morton Ransdell Allan Marquand Juliette Peirce Charles Santiago Sanders Peirce Roberta Kevelson Christine Ladd-Franklin Victoria, Lady Welby The Metaphysical Club book Peirce Geodetic Monument
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An existential graph is a type of diagrammatic or visual notation for logical expressions, proposed by Charles Sanders Peirce, who wrote on graphical logic as early as 1882,^[1] and continued to develop the method until his death in 1914.