Back مخطط فن Arabic Venn diaqramı Azerbaijani Диаграма на Вен Bulgarian ভেন রেখাচিত্র Bengali/Bangla Diagrama de Venn Catalan Vennův diagram Czech Diagram Venn Welsh Venn-diagram Danish Mengendiagramm German Διάγραμμα Βεν Greek
A Venn diagram is a diagram that shows the logical relation between sets. They were popularised by John Venn in the 1880s, and are now widely used. They are used to teach elementary set theory, and to illustrate simple set relationships in probability, logic, statistics, linguistics and computer science. A Venn diagram uses closed curves drawn on a plane to represent sets. Very often, these curves are circles or ellipses.
Similar ideas had been proposed before Venn. Christian Weise in 1712 (Nucleus Logicoe Wiesianoe) and Leonhard Euler (Letters to a German Princess) in 1768, for instance, came up with similar ideas. The idea was popularised by Venn in Symbolic Logic, Chapter V "Diagrammatic Representation", 1881.