John Venn FRS (4 Ağustos 1834 - 4 Nisan 1923), Britanyalı mantıkçı ve filozoftur. O Venn şemasını tanıtımından soonra ünlenmiştir, Olasılık, Mantık, İstatistik, ve Bilgisayar Bilimleri, Kümeler Kuramı dahil birçok alanda kullanılmaktadır.
Hayatı ve Çalışmaları
John Venn 1834'te Hull, Yorkshire'da doğdu. Onun annesi, Martha Sykes, Swanland'dan, Hull yakınlarına geldi, John sadece üç yaşına geldikten sonra öldü. His father was the Rev. Henry Venn who, at the time of John's birth, was the rector of the parish of Drypool near Hull. Henry Venn, a fellow of Queens', was from a family of distinction. His own father, John's grandfather, was the Rev. John Venn who had been the rector of Clapham in south London. He was a leader of the Clapham Sect, a group of evangelical Christians centered on his church who campaigned for prison reform and the abolition of slavery and cruel sports.
John Venn's father (Henry) also played a prominent role in the evangelical Christian movement. The Society for Missions in Africa and the East was founded by evangelical clergy of the Church of England in 1799, and in 1812 it was renamed the Church Missionary Society for Africa and the East. Henry Venn was secretary to this Society from 1841. He moved to Highgate near London in order to carry out his duties and held this position until his death in 1873.
John Venn was brought up strictly. It was expected that he would follow the family tradition into the Christian ministry. After Highgate School, he entered Gonville and Caius College, Cambridge, in 1853. He was graduated in 1857 and shortly afterward was elected a fellow of the college. He was ordained as a deacon at Ely in 1858 and became a priest in 1859. In 1862 he returned to Cambridge as a lecturer in moral sciences.
Venn's main area of interest was logic and he published three texts on the subject. He wrote The Logic of Chance which introduced the frequency interpretation or frequency theory of probability in 1866, Symbolic Logic which introduced the Venn diagrams in 1881, and The Principles of Empirical Logic in 1889.
In 1883, Venn was elected to the Royal Society. In 1897, he wrote a history of his college, called The Biographical History of Gonville and Caius College,1349-1897. He began a compilation of biographical notes of Cambridge University alumni, a work which was continued by his son, John Archibald Venn (1883-1958) and published as Alumni Cantabrigienses in 10 volumes from 1922-1953.
John Venn 1923'te Cambridge'de öldü ve yakınlardaki Trumpington Churchyard (Dahili) de gömüldü.