Venn, John

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John, English logician and philosopher, 1834-1923.
Venn diagram - pictorial representation of the extent to which two or more quantities or concepts are mutually inclusive and exclusive.
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References in periodicals archive ?
John Venn appointed his widow, Margaret, executrix, also charging her to "pay the portions given to my couzen Rich his children by my deceased bro.
The Saints lived as an extended family, and in 1814 the younger James Stephen married Jane Venn, daughter of John Venn, beloved rector of Clapham parish.
John Venn in The Logic of Chance (London: MacMillan, 1866) wrote against the use of mathematics in debates about miracles.