Intersection Above Union Symbol
⩇ denotes the intersection written above the union in set-theory style notation.
U+2A47
⩇ is a Unicode math symbol named “INTERSECTION ABOVE UNION” (U+2A47). It’s mainly used in technical writing and typesetting where set operations are arranged visually.
Intersection Above Union Symbol Meaning
⩇ (INTERSECTION ABOVE UNION) visually combines two set-operations: an intersection and a union, with the intersection shown above the union. It’s typically used in mathematics to express a relationship or construction involving sets, where the layout (intersection over union) matters for readability or for matching a formal definition. Because this is a Unicode character intended for mathematical contexts, its exact interpretation depends on the surrounding notation (for example, the sets involved and any brackets or operators around it). If you’re writing formal logic or set theory, place ⩇ alongside the relevant operands to ensure the meaning is unambiguous.
Common uses
- •Typesetting set-theory expressions with stacked operators
- •Math notes, worksheets, or equation help sheets where ∩ and ∪ must be combined visually
- •Designing math icons or UI components that need a compact operator glyph
- •Writing documentation or cheat sheets for formal logic and set operations
- •Using Unicode math characters in code-generated formulas or text renderings
Examples
⩇ Intersection Above Union
- ⩇A ⩇ B
- ⩇S ⩇ T represents a stacked set operator
- ⩇Look at the symbol ⩇ in the equation
- ⩇Use ⩇ when you need intersection above union
- ⩇Set notation example: X ⩇ Y
Variations
Ready to copy
Technical codes
| Unicode | U+2A47 | |
| HTML Entity | ⩇ | |
| HTML Code | ⩇ | |
| CSS | \2A47 | |
| Alt Code | Alt + 10823 | |
| Decimal | 10823 |
How to type Intersection Above Union Symbol (⩇)
On Windows
Hold Alt and type 10823 on the numeric keypad. In Word, type 2A47 then press Alt + X.
On Mac
Switch to the Unicode Hex Input keyboard, then hold Option and type 2A47. Or press Control + Command + Space and search.
On Linux
Press Control + Shift + U, type 2a47, then press Enter or Space.
Anywhere
Copy ⩇ with the button above and paste it wherever you need it — this works on every device and in every app, with no keyboard shortcut to remember.
FAQ
What does ⩇ mean?
⩇ is the Unicode character “INTERSECTION ABOVE UNION” and visually shows intersection stacked above union (set-theory notation).
What is the Unicode codepoint for ⩇?
⩇ is U+2A47.
How can I copy ⩇ into HTML or CSS/JavaScript?
HTML entity: ⩇. CSS escape: \2A47. JavaScript escape (Unicode): \u{2A47}.
Will ⩇ display the same everywhere?
Not always—appearance depends on font support for the Unicode math glyph. If it doesn’t render well, consider using ∩ and ∪ or a math-capable font.