When1: 1880
Who: John Venn [Venn, John]
What: mathematician
Where: USA
works\ On the Diagrammatic and Mechanical Representation of Prepositions and Reasonings [1880]
Detail: He lived 1834 to 1923 and invented Venn diagrams.
Mathematical Sciences>Mathematics>History>Set Theory
3-Mathematics-History-Set Theory
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Date Modified: 2022.0224