U+2AD1 "⫑" Closed Subset or Equal To Unicode Character
Unicode Version 17.0
⫑
U+2AD1 "⫑" Closed Subset or Equal To is a mathematical symbol used in set theory and formal logic to indicate that one set is a subset of, or equal to, another set, visually combining the two concepts into a single glyph. Unlike the more common "⊆" (subset or equal to), this character features a closed, fully joined shape for the subset symbol, which some typefaces or notation systems employ for stylistic distinction or to avoid confusion in densely packed equations. Its design and use are primarily found in specialized academic texts and computer science contexts where precise typographical differentiation is required in relational expressions.
General Properties
| Code Point | U+2AD1 |
| Version Added | 3.2 |
| Name | Closed Subset or Equal To |
| Block | Supplemental Mathematical Operators |
| General Category | Math Symbol |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Other Neutral |
| Mirrored | Yes |
| Mirrored Character | "⫒" U+2AD2 Closed Superset or Equal To |
Encodings
| HTML Decimal Encoding | ⫑ |
| HTML Hex Encoding | ⫑ |
| UTF-8 Encoding | 0xE2 0xAB 0x91 |
| UTF-16 Encoding | 0x2AD1 |
| UTF-32 Encoding | 0x00002AD1 |
| C/C++/Java Escape | \u2ad1 |
Unicode Properties
| NFC Quick Check | Yes |
| NFD Quick Check | Yes |
| NFKC Quick Check | Yes |
| NFKD Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Alphabetic |
| Script | Common |
| Script Extensions | Common |
| Indic Syllabic Category | Other |
| Pattern Syntax | Yes |
| Math | Yes |
| Vertical Orientation | Rotated |
| Grapheme Base | Yes |
| Grapheme Cluster Break | Other |
| Word Break | Other |
| Sentence Break | Other |