U+2A63 "⩣" Logical or with Double Underbar Unicode Character
Unicode Version 17.0
⩣
U+2A63 "⩣" Logical or with Double Underbar is a mathematical operator used in formal logic and set theory to represent a modified logical disjunction, where the double underbar typically indicates an associative or binary operation that satisfies specific algebraic properties, such as idempotence or the absorption law, distinguishing it from a standard logical OR. It appears in advanced notation for lattice theory, Boolean algebra, or circuit design, serving as a visual cue for a variant of the inclusive OR that is often defined within a structured algebraic system. This character is part of the Supplemental Mathematical Operators block and is intended for use in technical documents and publications that require precise symbolic logic.
General Properties
| Code Point | U+2A63 |
| Version Added | 3.2 |
| Name | Logical or with Double Underbar |
| 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 0xA9 0xA3 |
| UTF-16 Encoding | 0x2A63 |
| UTF-32 Encoding | 0x00002A63 |
| C/C++/Java Escape | \u2a63 |
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 |