⊉
Math Operator 134
- Unicode
- U+2289
- Category
- Math
- HTML Entity
- ⊉
- CSS
- \2289
The ⊉ symbol, officially known as "Neither a Superset of Nor Equal To," is a mathematical operator used extensively in set theory. It visually combines a superset symbol and an equals sign, crossed out by a slash to indicate a strict negation. You will primarily see this symbol in advanced mathematics, logic equations, and academic texts to state that one set does not fully contain another and they are not identical.
How to Type
- Windows
- Type 2289 followed by Alt+X in Microsoft Word, or press Win + . to open the emoji/symbol panel
- macOS
- Control + Command + Space to open the Character Viewer, then search for 'superset'
- Linux
- Ctrl + Shift + U, type 2289, then press Enter
- HTML
- ⊉ or ⊉
In Programming
In technical documentation and computational logic, this symbol is used to represent negative subset-superset relationships. In LaTeX, it is rendered using the `\nsupseteq` command to format complex mathematical formulas.
Tags
A ⊉ B meaning
HTML ⊉
LaTeX not superset or equal
U+2289
\not\supseteq
\nsupseteq
exclusion
mathematics
negation
neither superset nor equal
not superset or equal
set theory
type ⊉ symbol