∋

Math Operator 12

Unicode
U+220B
Category
Math
HTML Entity
∋
CSS
\220B
The "contains as member" symbol (∋) is a mathematical operator used in set theory to indicate that a set includes a specific element. It acts as the exact reverse of the standard "element of" symbol (∈), meaning the expression "A ∋ b" is simply read as "set A contains b." While primarily found in academic papers and math textbooks, it occasionally appears in technical typography to represent ownership or inclusion.

How to Type

Windows
Type 220B then press Alt + X (in Word), or Win + . and search "contains"
macOS
Control + Command + Space then search "contains as member"
Linux
Ctrl + Shift + U then type 220b and press Enter
HTML
∋ or ∋

In Programming

In mathematical typesetting languages like LaTeX, this symbol is easily generated using the \ni or \owns commands. While rarely used in traditional programming code, it frequently appears in formal logic schemas and set theory documentation.

Read full meaning article

Tags

A contains b contains member converse membership flipped element of has element inclusion mathematics ni symbol reverse element of set contains element set inclusion symbol set theory ∋ meaning

Related Symbols

± Plus Minus Sign × Multiplication Sign ÷ Division Sign ≠ Not Equal To ≈ Approximately Equal To ∞ Infinity √ Square Root ∑ Summation ∫ Integral π Pi ≤ Less Than or Equal To ≥ Greater Than or Equal To