U+2289 "⊉" Neither A Superset of nor Equal To Unicode Character
Unicode Version 17.0
⊉
U+2289 "⊉" Neither A Superset of nor Equal To is a mathematical symbol used in set theory to express a specific negative relationship between two sets, indicating that the first set is not a superset of the second set and also is not equal to it. Visually, it resembles the superset symbol "⊇" with a diagonal slash through it, which negates both the superset and equality conditions. This character is part of the Mathematical Operators block and is commonly employed in logical proofs, academic papers, and computer science contexts to denote that a given set fails to contain all elements of another set while also differing in its composition.
General Properties
| Code Point | U+2289 |
| Version Added | 1.1 |
| Name | Neither A Superset of nor Equal To |
| Block | Mathematical Operators |
| General Category | Math Symbol |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Other Neutral |
| Mirrored | Yes |
| Mirrored Character | "⊈" U+2288 Neither A Subset of nor Equal To |
| Decomposition Type | Canonical |
| Decomposition Mapping | "⊇" U+2287 Superset of or Equal To "̸" U+0338 Combining Long Solidus Overlay |
Encodings
| HTML Decimal Encoding | ⊉ |
| HTML Hex Encoding | ⊉ |
| UTF-8 Encoding | 0xE2 0x8A 0x89 |
| UTF-16 Encoding | 0x2289 |
| UTF-32 Encoding | 0x00002289 |
| C/C++/Java Escape | \u2289 |
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 |