Not A Superset Of Symbol
⊅ denotes “not a superset of,” commonly used in set comparisons.
U+2285
The symbol ⊅ (U+2285) is a mathematical relation used to state that one set is not a superset of another. It’s a compact way to express set inclusion negation in formulas and proofs. You can copy it directly or use the provided HTML/CSS/JavaScript escapes.
Not A Superset Of Symbol Meaning
⊅ is the “not a superset of” relation. In set notation, it’s used when the statement “A is a superset of B” is false. That is, A does not contain all elements of B, so B is not included in A. This symbol appears in math writing for set comparisons, logic statements, and formal descriptions of constraints. It’s also useful in technical documentation where set relations are specified precisely. If you’re building a formula or diagram, use ⊅ to clearly communicate the negated superset relationship rather than rewriting the phrase in words.
Common uses
- •State that one set does not contain another set (negated superset condition) in math notes
- •Write formal logical constraints in technical documentation and specifications
- •Label relationships in set theory explanations or lecture slides
- •Create conditions in programming documentation that reference set inclusion
- •Annotate diagrams or tables comparing membership/inclusion properties
Examples
⊅ Not a Superset of Symbol
- ⊅Let A ⊅ B, meaning B is not contained in A.
- ⊅We have {1,2} ⊅ {1,2,3}.
- ⊅If A ⊅ B, then the inclusion A ⊇ B does not hold.
- ⊅The condition ⊅ is used when a superset requirement fails.
- ⊅From A ⊅ B, we can conclude B \u22c5 A is not fully included.
Variations
Ready to copy
Technical codes
| Unicode | U+2285 | |
| HTML Entity | ⊅ | |
| HTML Code | ⊅ | |
| CSS | \2285 | |
| Alt Code | Alt + 8837 | |
| Decimal | 8837 |
How to type Not A Superset Of Symbol (⊅)
On Windows
Hold Alt and type 8837 on the numeric keypad. In Word, type 2285 then press Alt + X.
On Mac
Switch to the Unicode Hex Input keyboard, then hold Option and type 2285. Or press Control + Command + Space and search.
On Linux
Press Control + Shift + U, type 2285, 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?
⊅ means “not a superset of.” In set notation, it indicates that one set does not contain another set.
How do I copy ⊅ from this page?
Copy the character directly: ⊅. You can also use the provided HTML entity or escapes in code editors.
Is ⊅ the same as “not a subset of”?
No. ⊅ is the negation of the “superset of” relationship. “Not a subset of” is a different symbol.
Where can ⊅ be used?
It’s commonly used in math text, formulas, set theory explanations, and technical documents that rely on set inclusion notation.