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Lewis Carroll's Diagrams

This Demonstration shows Carroll's diagrams of a Boolean function of three propositional variables , and that correspond to membership in the sets , and . Click the rectangles or L-shaped regions to indicate they are nonempty. The Boolean function is given by minimizing its disjunctive normal form.

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DETAILS

This version of Carroll's diagrams was found in [2, p. 112]. See also [5].
References
[1] R. Audi, ed., The Cambridge Dictionary of Philosophy, Cambridge: Cambridge University Press, 1995 pp. 780–782.
[2] L. Borkowski, Elementy logiki formalnej (Elements of Formal Logic, in Polish), 3rd ed., Warsaw: Wyd, 1976.
[3] L. Carroll, Symbolic Logic and the Game of Logic, New York: Dover, 1958.
[4] I. M. Copi and C. Cohen, Introduction to Logic, 9th ed., New York: Macmillan, 1994 pp. 214–218.
[5] Wikipedia. "Categorical Proposition." (Aug 16, 2016) en.wikipedia.org/wiki/Categorical_proposition.
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