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Venn diagram
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=={{anchor|Johnston}}Related concepts== [[File:Venn3tab.svg|class=skin-invert-image|thumb|Venn diagram as a truth table]] Venn diagrams correspond to [[truth table]]s for the propositions <math>x\in A</math>, <math>x\in B</math>, etc., in the sense that each region of Venn diagram corresponds to one row of the truth table.<ref name="Grimaldi_2004"/><ref name="Johnson_2001"/> This type is also known as Johnston diagram. Another way of representing sets is with John F. Randolph's [[R-diagram]]s.
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