U+21A6 "↦" Rightwards Arrow from Bar Unicode Character
Unicode Version 17.0
↦
U+21A6 "↦" Rightwards Arrow from Bar is a mathematical and logical notation symbol that depicts an arrow with a short vertical bar at its tail, originating from the arrow's starting point. It is commonly used in mathematics to represent the mapping of an element from a domain to a codomain, particularly in the context of functions or relations, such as in set theory or lambda calculus where it denotes the assignment or transformation of a specific input to an output. The symbol also appears in computer science for representing function definitions or pointer assignments in theoretical diagrams, and it is distinct from the simpler rightwards arrow due to the bar that suggests a defined source or initialization.
General Properties
| Code Point | U+21A6 |
| Version Added | 1.1 |
| Name | Rightwards Arrow from Bar |
| Unicode 1.0 Name | Right Arrow from Bar |
| Block | Arrows |
| General Category | Math Symbol |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Other Neutral |
Encodings
| HTML Decimal Encoding | ↦ |
| HTML Hex Encoding | ↦ |
| UTF-8 Encoding | 0xE2 0x86 0xA6 |
| UTF-16 Encoding | 0x21A6 |
| UTF-32 Encoding | 0x000021A6 |
| C/C++/Java Escape | \u21a6 |
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 |