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⩇

intersection above union

Intersection Above Union

⩇ is named for the set-intersection sign above the set-union sign: intersection is what two sets share, and union includes everything in either set. The name describes the form; surrounding notation determines the exact rule. A 2000 Unicode proposal lists it among technical intersection-and-union operators, and mathematical markup—the code used to describe formulas—also calls it <code>capcup</code>. Its paired sign, ⩆, reverses the order.

Text symbol
Search it as
capcup · capovercup · intersection union symbol · union above intersection
Shows up in
Anything that takes text · its shape is whatever your font draws

What ⩇ means

⩇ is the intersection above union. Unicode classifies it as a mathematical symbol and files it in the Supplemental Mathematical Operators block; this site shelves it under Maths.

Its appearance depends on the font and text styling.

How it is encoded

⩇ is a single code point, U+2A47. In HTML that is ⩇, and in CSS \2A47.

Don't confuse it with

4
⩆
Union Above Intersection
shares “above”, “intersection”, “union”
⩈
Union Above Bar Above Intersection
shares “above”, “intersection”, “union”
⩉
Intersection Above Bar Above Union
shares “above”, “intersection”, “union”
⨃
N-Ary Union Operator With Dot
shares “union”

Questions people ask

1

Why does ⩇ show as a box on some devices?

Because that device's fonts have no glyph for it. The character is still correct and still copies correctly — the box is a missing glyph, not a broken character.

How to type ⩇

Windows (Word)
Alt+XType 2A47, then Alt+X to get ⩇.
Windows
Win+Rrun charmap for the full table, or use the emoji picker's Ω symbols tab (Win + .).
macOS
Control+Command+SpaceOpen the character viewer and search “intersection above union”.
Linux
Ctrl+Shift+UType 2a47, then Enter or Space.
HTML
&#x2A47;
CSS
\2A47
Codes and encoding1 code points
HTML decimal
&#10823;
HTML hex
&#x2A47;
CSS content
content: "\2A47";
Each escape is closed by the next backslash; a trailing space is needed before a literal hex digit.
URL encoded
%E2%A9%87
1
On screen
1
Code points
1
JS .length
3
UTF-8 bytes

A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.

Families this belongs to

1

Maths & numbers1,835 symbols

1️⃣📏📐✖️➕➖➗🟰♾️#️⃣*️⃣0️⃣