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John Venn, English mathematician and philosopher, created the Venn diagram (born 1834)
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John Venn
English logician and philosopher (1834–1923)
John Venn, FRS, FSA was an English mathematician, logician and philosopher noted for introducing Venn diagrams, which are used in logic, set theory, probability, statistics, and computer science. In 1866, Venn published The Logic of Chance, a groundbreaking book which espoused…Source: Wikipedia (CC BY-SA)
Venn diagram
Diagram that shows all possible logical relations between a collection of sets
A Venn diagram is a widely used diagram style that shows the logical relation between sets, popularized by John Venn (1834–1923) in the 1880s. The diagrams are used to teach elementary set theory, and to illustrate simple set relationships in probability, logic, statistics,…Source: Wikipedia (CC BY-SA)