U+239B "⎛" Left Parenthesis Upper Hook Unicode Character
Unicode Version 17.0
⎛
U+239B "⎛" Left Parenthesis Upper Hook is a graphic character used primarily in mathematical and technical typesetting to represent the top portion of a large, vertically extended left parenthesis. It belongs to the "Miscellaneous Technical" block and is designed to be combined with other vertical extension pieces, such as the Left Parenthesis Extension and the Left Parenthesis Lower Hook, in order to create a seamless, tall parenthesis that encloses multi-line expressions or matrices. When rendered correctly, this hook character visually resembles a curved bracket ending with a small horizontal segment, providing a clean and consistent appearance for complex notation without needing custom graphics.
General Properties
| Code Point | U+239B |
| Version Added | 3.2 |
| Name | Left Parenthesis Upper Hook |
| Block | Miscellaneous Technical |
| General Category | Math Symbol |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Other Neutral |
Encodings
| HTML Decimal Encoding | ⎛ |
| HTML Hex Encoding | ⎛ |
| UTF-8 Encoding | 0xE2 0x8E 0x9B |
| UTF-16 Encoding | 0x239B |
| UTF-32 Encoding | 0x0000239B |
| C/C++/Java Escape | \u239b |
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 |