Existential Graphs
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Sample Proofs
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Software
Software
Peirce Logic: Interactive website for Existential Graphs
A Basic JAVA Existential Graphs applet
A presentation on the use of the above applet
A presentation on desired improvements and extensions
Pegasus: An Existential Graphs Proof Player
(.zip, 5M)
Ladies and Tigers Pegasus input file
Brian Boodman's Applet
Instructions for use
Existential GraphsExistential Graphs