# Venn diagram

Venn diagramOrigin of Venn diagram

after John*Venn*(1834-1923), Eng logician

## Venn diagram

noun

Origin of Venn diagram

*After John*

*Venn*

*(1834-1923), British logician*

**Venn diagram**

top: Sets A and B intersect to form set C.

bottom: Set B is a subset of set A. All members of B are also members of A.

## venn-diagram

(*plural* Venn diagrams)

- (set theory) A diagram representing some sets by contours of closed shapes, such as circles or ellipses (sometimes also the universal set as a rectangle enclosing all of these shapes), and indicating the relationships between the sets: by overlapping the shapes to show that the corresponding sets have a non-empty intersection, and by possibly (but not necessarily) enclosing all of the sets (which are proper subsets of the universal set) within a universal set (represented typically by a rectangle); such that the total number of simply connected regions is , where
*n*is the number of depicted sets which are proper subsets of the universal set.

Named after John Venn (1834-1923), British mathematician and philosopher.

## venn diagram - Computer Definition

A graphic technique for visualizing set theory concepts using overlapping circles and shading to indicate intersection, union and complement. It was introduced in the late 1800s by English logician, John Venn, although it is believed that the method originated earlier.