U+2AE9 "⫩" Short Up Tack Above Short down Tack Unicode Character
Unicode Version 17.0
⫩
U+2AE9 "⫩" Short Up Tack Above Short down Tack is a mathematical symbol typically used in formal logic, set theory, or lattice theory to represent a specific binary relation or operation, often indicating a double tack or orthogonal relationship where a short up tack is positioned directly above a short down tack. This glyph combines two opposing tack symbols vertically to suggest a symmetrical or bidirectional constraint, such as perpendicularity or mutual exclusion in abstract algebraic structures. Its design visually emphasizes the simultaneous upward and downward orientation, making it distinct from single tack characters like the up tack (⊥) or down tack (⊤).
General Properties
| Code Point | U+2AE9 |
| Version Added | 3.2 |
| Name | Short Up Tack Above Short down Tack |
| Block | Supplemental Mathematical Operators |
| General Category | Math Symbol |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Other Neutral |
Encodings
| HTML Decimal Encoding | ⫩ |
| HTML Hex Encoding | ⫩ |
| UTF-8 Encoding | 0xE2 0xAB 0xA9 |
| UTF-16 Encoding | 0x2AE9 |
| UTF-32 Encoding | 0x00002AE9 |
| C/C++/Java Escape | \u2ae9 |
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 |