GlyphIndexOverlapping sets
{1, 2} ∪ {2, 3} = {1, 2, 3}The shared element 2 occurs once in the resulting set.
Union sign
The union sign ∪ combines the elements of two sets. An element shared by both sets appears only once in the result.
UNION
Appearance can vary by font.
Character details
♡→✦
3 code pointsMeaning and context
The union sign ∪ combines the elements of two sets. An element shared by both sets appears only once in the result.
How to use it
Write the operand sets clearly. If the letter U is also used as a set name, distinguish it from the curved union operator by code point.
Examples
Union with empty set
{a, b} ∪ ∅ = {a, b}Adding no elements leaves the set unchanged.
Similar shapes, different characters
Intersection
U+2229Intersection retains only elements common to both sets.
DetailsLatin capital U
U+0055A letter used as a set name is not U+222A.
Sources and method
- Unicode 18.0.0 character database — Pinned standard character identities and properties; the application computes UTF encodings from the original text.
- Unicode character code charts — Reference glyphs are not a guarantee of the appearance in a user’s font.