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Mathematica

The Mathematica Book

Mathematica Reference Guide

Listing of Named Characters

Union

\[Union]

Alias: un.

Infix operator with built-in evaluation rules.

x y is by default interpreted as Union[x, y].

The character is sometimes called "cup"; but see also \[Cup] .

See The Mathematica Book: Section 1.10.4, Section 3.10.1 and Section 3.10.4.

See also: \[Intersection] , \[SquareUnion] , \[UnionPlus] , \[Cup] , \[Vee] .