Ring Operator
Part of Math Symbols
Ring Operator has no standard Windows Alt code. Copy the character directly, or use its HTML entity or Unicode value instead.
- Alt code
- None
- HTML entity
- ∘
- Unicode
- U+2218
About this symbol
∘, the ring operator, means composition of functions: (f ∘ g)(x) is f(g(x)), doing g first and then f. It is also used for the degree sign in some typesetting, though the correct character is °.
Unicode facts
- Official name
- RING OPERATOR
- Also called
- Composite function, APL jot
- Type
- Maths symbol
- Unicode block
- Mathematical Operators
- Unicode group
- Operators
- Added in
- Unicode 1.1 (1993)
Click the symbol or any value at the top of the page to copy it. See the full Math Symbols chart for related characters.