U+2951 "⥑" Up Barb Left down Barb Left Harpoon Unicode Character
Unicode Version 17.0
⥑
U+2951 "⥑" Up Barb Left down Barb Left Harpoon is a typographic symbol used in mathematical notation, specifically within the field of set theory and logical mappings to represent a bidirectional harpoon with barbs pointing upward and downward on the left side of a horizontal line, signifying a relation or a two-way directional dependency that originates from or interacts with an element on the left. It belongs to the "Supplemental Arrows-B" block of Unicode and is often employed in diagrams for category theory or complex relational algebra, where precise directional indicators are essential for illustrating correspondences between objects or variables without the confusion of standard arrows.
General Properties
| Code Point | U+2951 |
| Version Added | 3.2 |
| Name | Up Barb Left down Barb Left Harpoon |
| Block | Supplemental Arrows-B |
| General Category | Math Symbol |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Other Neutral |
Encodings
| HTML Decimal Encoding | ⥑ |
| HTML Hex Encoding | ⥑ |
| UTF-8 Encoding | 0xE2 0xA5 0x91 |
| UTF-16 Encoding | 0x2951 |
| UTF-32 Encoding | 0x00002951 |
| C/C++/Java Escape | \u2951 |
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 |