Double Superset Symbol
⋑ is the double superset symbol (U+22D1) used to express a strengthened “superset” relation in math.
U+22D1
The symbol ⋑ is called the double superset. It’s a Unicode math character you may see in sets, logic, or other formal notation. This page helps you understand what it signals and how to copy it correctly.
Double Superset Symbol Meaning
⋑ (Unicode U+22D1) is named “double superset.” It represents a stronger form of the superset relationship in mathematical notation. In contexts where a single “superset” is written with one symbol, the double version is used to indicate an alternative or more specific relation as defined by the surrounding system (for example, in logic, set relations, or formal comparisons). Because the exact interpretation can depend on the notation standard used by a document, it’s best to follow the definitions in that source. When writing or typesetting, copy the character exactly to avoid mismatched symbols.
Common uses
- •Expressing a strengthened superset relation in math and set notation
- •Formatting formal logic or relational statements in documents and textbooks
- •Labeling constraints or comparisons in technical writing
- •Using in math-heavy diagrams, notes, or study materials
- •Embedding in websites, slides, or design mockups that require Unicode math symbols
Examples
⋑ Double Superset (U+22D1)
- ⋑A ⋑ B, meaning A has the double superset relation to B.
- ⋑Let S ⋑ T in the given system of set relations.
- ⋑The expression uses ⋑ to denote a strengthened superset comparison.
- ⋑In this notation, X ⋑ Y is not the same as the single superset.
- ⋑Use ⋑ consistently with the definitions from your reference.
Variations
Ready to copy
Technical codes
| Unicode | U+22D1 | |
| HTML Entity | ⋑ | |
| HTML Code | ⋑ | |
| CSS | \22D1 |
FAQ
What does the Double Superset symbol mean?
⋑ (Unicode U+22D1) is named “double superset.” It represents a stronger form of the superset relationship in mathematical notation. In contexts where a single “superset” is written with one symbol, the double version is used to indicate an alternative or more specific relation as defined by the surrounding system (for example, in logic, set relations, or formal comparisons). Because the exact interpretation can depend on the notation standard used by a document, it’s best to follow the definitions in that source. When writing or typesetting, copy the character exactly to avoid mismatched symbols.
What is the Unicode code point for ⋑?
⋑ is Unicode U+22D1.
How do I copy the symbol ⋑ for use in HTML?
You can copy the character directly, or use the HTML entity: ⋑.
How do I type ⋑ using CSS or a string escape?
CSS/Unicode escape: \\22D1.
Does ⋑ mean the same thing as the single superset symbol?
Not always. ⋑ is the “double superset” and represents a strengthened/specific relation defined by the notation system in use, so check the definitions in your source.