U+21AE "↮" Left Right Arrow with Stroke Unicode Character
Unicode Version 17.0
↮
U+21AE "↮" Left Right Arrow with Stroke is a typographic symbol featuring a bidirectional horizontal arrow with a solid vertical line or stroke crossing through its center, indicating negation or cancellation of the left and right motion it represents. This character is primarily used in mathematics, logic, and formal notation to denote that a bidirectional relationship does not hold, such as the impossibility of an equivalence or a two-way implication between two statements. It appears in contexts like set theory, algebra, and computer science where operators or conditions must be clearly marked as false or invalid for both directions.
General Properties
| Code Point | U+21AE |
| Version Added | 1.1 |
| Name | Left Right Arrow with Stroke |
| Block | Arrows |
| General Category | Math Symbol |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Other Neutral |
| Decomposition Type | Canonical |
| Decomposition Mapping | "↔" U+2194 Left Right Arrow "̸" U+0338 Combining Long Solidus Overlay |
Encodings
| HTML Decimal Encoding | ↮ |
| HTML Hex Encoding | ↮ |
| UTF-8 Encoding | 0xE2 0x86 0xAE |
| UTF-16 Encoding | 0x21AE |
| UTF-32 Encoding | 0x000021AE |
| C/C++/Java Escape | \u21ae |
Unicode Properties
| NFC Quick Check | Yes |
| NFKC 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 |