⊈
Math Operator 133
- Unicode
- U+2288
- Category
- Math
- HTML Entity
- ⊈
- CSS
- \2288
The ⊈ symbol, officially known as "Neither a Subset of nor Equal to," is a mathematical operator used in set theory. It indicates that one set does not contain all the elements of another set, and the two sets are not completely identical. While primarily found in academic papers and mathematical textbooks, it is also used in advanced technical documentation to define exclusionary relationships between data collections.
How to Type
- Windows
- Alt+8840 or Win+. then search "subset"
- macOS
- Control+Command+Space then search "neither a subset"
- Linux
- Ctrl+Shift+U then 2288
- HTML
- ⊈ or ⊈
In Programming
In mathematical typesetting systems like LaTeX, this symbol is generated using the `\nsubseteq` command. It also appears in scientific programming languages with built-in set operations, such as Julia, to logically evaluate that one collection is not a subset of another.
Tags
A ⊈ B meaning
HTML ⊈
LaTeX not subset or equal
U+2288
\not\subseteq
\nsubseteq
exclusion
mathematics
negation
neither subset nor equal
not subset or equal
set theory
type ⊈ symbol