U+27DF "⟟" Up Tack with Circle Above Unicode Character
Unicode Version 17.0
⟟
U+27DF "⟟" Up Tack with Circle Above is a rarely used typographic or mathematical symbol that combines a vertical upward-pointing stick, known as a tack, with a small hollow circle placed above it, typically representing a specific logical relation, operator, or notation within specialized formal systems such as advanced logic, set theory, or type theory, though its primary function is notation rather than common usage.
General Properties
| Code Point | U+27DF |
| Version Added | 3.2 |
| Name | Up Tack with Circle Above |
| Block | Miscellaneous Mathematical Symbols-A |
| General Category | Math Symbol |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Other Neutral |
Encodings
| HTML Decimal Encoding | ⟟ |
| HTML Hex Encoding | ⟟ |
| UTF-8 Encoding | 0xE2 0x9F 0x9F |
| UTF-16 Encoding | 0x27DF |
| UTF-32 Encoding | 0x000027DF |
| C/C++/Java Escape | \u27df |
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 |