John Venn

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Venn, John

Born Aug. 4, 1834, near Hull; died Apr. 4, 1923, in Cambridge. English logician. He worked in the field of the logic of classes, into which he introduced a special formulation, Venn diagrams, which are used in the logical mathematical theory of “formal neuronic nets.” The substantiation of inverse operations in the logical calculus of G. Boole belongs to Venn. He also worked on the logic of probability.

WORKS

The Logic of Chance,3rd ed. London, 1888.
The Principles of Empirical or Inductive Logic.London, 1889.
Symbolic Logic.London, 1881.

REFERENCES

Stiazhin, N. I. Formirovanie matematicheskoi logiki.Moscow, 1967.
Gutchin, I. B., and A. S. Kuzichev. Bionika i nadezhnost’.Moscow, 1967.
Kuzichev, A. S. Diagrammy Venna.Moscow, 1968.

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When he was born in 1647, his great-uncle John Venn would have been at the height of his power and influence in the country.

Christopher rich--from puritan to theatre manager

The idea is simple Three overlapping circles intersect to create eight distinct areas Despite their simplicity, such diagrams can be used to represent complex logical propositions and algebraic statements In charting the history of Venn diagrams, Edwards reveals that John Venn devised the diagrams in the late 1880s in an effort to create a symbolic logic, Since then, the diagrams have permeated art and economics, as well as mathematics and logic.

Cogwheels of the Mind: the Story of Venn Diagrams

For a nice account of the development of the notion of diagrams via Leonhard Euler, John Venn, and Charles Sanders Peirce, see the second chapter.