U+220C "∌" Does Not Contain as Member Unicode Character
Unicode Version 17.0
∌
U+220C "∌" Does Not Contain as Member is a mathematical symbol used in set theory and logic to denote that a specific element is not a member of a given set. It represents the negation of the "contains as member" relation, effectively meaning that the object on the left side of the symbol is not an element of the set on the right side. For example, in the expression ( 5 ∌ {1, 2, 3} ), the symbol indicates that 5 is not contained within the set. This character is part of the Mathematical Operators block and is visually distinct from similar symbols like the "element of" (∈) or "not an element of" (∉) by having a slash through a reversed "member" shape.
General Properties
| Code Point | U+220C |
| Version Added | 1.1 |
| Name | Does Not Contain as Member |
| Block | Mathematical Operators |
| General Category | Math Symbol |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Other Neutral |
| Mirrored | Yes |
| Mirrored Character | "∉" U+2209 Not An Element Of |
| Decomposition Type | Canonical |
| Decomposition Mapping | "∋" U+220B Contains as Member "̸" U+0338 Combining Long Solidus Overlay |
Encodings
| HTML Decimal Encoding | ∌ |
| HTML Hex Encoding | ∌ |
| UTF-8 Encoding | 0xE2 0x88 0x8C |
| UTF-16 Encoding | 0x220C |
| UTF-32 Encoding | 0x0000220C |
| C/C++/Java Escape | \u220c |
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 |