U+2A4F "⩏" Double Square Union Unicode Character
Unicode Version 17.0
⩏
U+2A4F "⩏" Double Square Union is a mathematical symbol used primarily in set theory and formal logic to represent a union operation applied in a double or iterated fashion, often signaling the logical union of a pair of collections or a specific type of generalized binary union. Its design visually combines two square-like shapes conjoined at the base, distinguishing it from the standard single square union symbol and indicating a nuanced operation in advanced algebra or lattice theory. This character belongs to the Supplemental Mathematical Operators block, allowing it to serve specialized notation in academic texts where precise differentiation between union variants is required.
General Properties
| Code Point | U+2A4F |
| Version Added | 3.2 |
| Name | Double Square Union |
| 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 0x8F |
| UTF-16 Encoding | 0x2A4F |
| UTF-32 Encoding | 0x00002A4F |
| C/C++/Java Escape | \u2a4f |
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 |