Peirce's Existential Graphs

Peirce's Existential Graphs are a visual system for representing logical ideas, akin to a formal diagram language. They use simple symbols—such as shaded areas, lines, and circles—to depict statements, their negations, and relationships like existence and conjunction. Imagine drawing shapes to show what is true or false, and how different ideas connect or depend on each other. This visual approach helps clarify complex logical structures, making abstract reasoning more intuitive. Overall, they serve as a precise, graphical way to explore and analyze logical and philosophical concepts.