U+23A7 "⎧" Left Curly Bracket Upper Hook Unicode Character

Unicode Version 17.0

U+23A7 "⎧" Left Curly Bracket Upper Hook is a typographic symbol belonging to the Miscellaneous Technical block, specifically designed as a component for constructing large, multi-line curly brackets in mathematical or technical typesetting. It represents the top segment of a left-opening brace, featuring a small horizontal hook extending downward from the upper portion to seamlessly connect with the middle and lower parts of the bracket. This character is often used in combination with other bracket fragments, such as the left curly bracket middle piece and lower hook, to create extensible braces that scale vertically for enclosing stacked expressions, equation systems, or sets in plain text environments where automatic bracket stretching is unavailable.

General Properties

Code Point U+23A7
Version Added 3.2
Name Left Curly Bracket 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 0xA7
UTF-16 Encoding 0x23A7
UTF-32 Encoding 0x000023A7
C/C++/Java Escape \u23a7

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