⋑
Double Superset
- Unicode
- U+22D1
- Category
- Math
- HTML Entity
- ⋑
- CSS
- \22D1
The ⋑ symbol, formally known as the Double Superset, is a specialized mathematical operator used in advanced set theory and formal logic. It is the reversed form of the double subset sign (⋐), often indicating specific variations of superset relationships such as topological closures. While rarely seen outside of academic math proofs, it remains a vital character for accurate digital typesetting in mathematical computing.
How to Type
- Windows
- Type 22D1 then press Alt+X (in Microsoft Word), or press Win+. to open the symbol menu
- macOS
- Control+Command+Space then search 'double superset'
- Linux
- Ctrl+Shift+U then type 22D1 and press Enter
- HTML
- ⋑
In Programming
Primarily used in mathematical markup languages like LaTeX and MathML to render complex set theory formulas, rather than as a functional operator in standard programming languages.
Tags
LaTeX Supset
advanced set theory
double superset
formal logic symbol
inclusion
math unicode operator
mathematics
nested set structures
set theory
set theory superset
strict superset
strong
topological closure symbol
⋑ copy paste