U+220B "∋" Contains as Member Unicode Character
Unicode Version 17.0
∋
U+220B "∋" Contains as Member is a mathematical symbol used to denote set membership from the right side, indicating that something on the left of the symbol contains an element or set on the right. It is the converse relationship to the "Element Of" symbol (∈), so while "a ∈ B" means "a is an element of B," the "∋" symbol in an expression like "B ∋ a" means "B contains a as a member." This symbol is commonly found in set theory, logic, and advanced mathematics to clearly express inclusion relations in either direction within formulas and proofs.
General Properties
| Code Point | U+220B |
| Version Added | 1.1 |
| Name | Contains as Member |
| Block | Mathematical Operators |
| General Category | Math Symbol |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Other Neutral |
| Mirrored | Yes |
| Mirrored Character | "∈" U+2208 Element Of |
Encodings
| HTML Decimal Encoding | ∋ |
| HTML Hex Encoding | ∋ |
| UTF-8 Encoding | 0xE2 0x88 0x8B |
| UTF-16 Encoding | 0x220B |
| UTF-32 Encoding | 0x0000220B |
| C/C++/Java Escape | \u220b |