U+29B0 "⦰" Reversed Empty Set Unicode Character
Unicode Version 17.0
⦰
U+29B0 "⦰" Reversed Empty Set is a typographical symbol that visually inverts the familiar empty set notation (∅), often used in mathematics to denote a set with no elements. While the standard empty set represents absence or nullity, the reversed variant may serve specialized purposes in formal logic, set theory, or notation systems where a contrasting or inverted concept is needed, such as indicating a "non-empty" set or a complementary operation. Its inclusion in Unicode ensures consistent representation across digital texts, though it remains less common than the standard empty set symbol and is primarily encountered in academic or technical contexts.
General Properties
| Code Point | U+29B0 |
| Version Added | 3.2 |
| Name | Reversed Empty Set |
| Block | Miscellaneous Mathematical Symbols-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 0xA6 0xB0 |
| UTF-16 Encoding | 0x29B0 |
| UTF-32 Encoding | 0x000029B0 |
| C/C++/Java Escape | \u29b0 |
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 |