U+27C3 "⟃" Open Subset Unicode Character
Unicode Version 17.0
⟃
U+27C3 "⟃" Open Subset is a mathematical symbol that visually represents a subset symbol with an opening, as if the left side of a standard subset sign (⊂) is not fully closed, indicating a specialized or altered relation between sets. It belongs to the Miscellaneous Mathematical Symbols-A block and is typically used in advanced set theory or lattice theory contexts to denote a variation of the subset relation, such as an open subset in a topological space or a non-strict inclusion where the boundary is omitted. Unlike the more common subset symbols U+2282 (⊂) or U+2286 (⊆), this glyph emphasizes a specific property of openness or incompleteness in the containment relationship.
General Properties
| Code Point | U+27C3 |
| Version Added | 4.1 |
| Name | Open Subset |
| Block | Miscellaneous Mathematical Symbols-A |
| General Category | Math Symbol |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Other Neutral |
| Mirrored | Yes |
| Mirrored Character | "⟄" U+27C4 Open Superset |
Encodings
| HTML Decimal Encoding | ⟃ |
| HTML Hex Encoding | ⟃ |
| UTF-8 Encoding | 0xE2 0x9F 0x83 |
| UTF-16 Encoding | 0x27C3 |
| UTF-32 Encoding | 0x000027C3 |
| C/C++/Java Escape | \u27c3 |
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 |