Composition
∘
Type it
| Unicode | U+2218 | |
|---|---|---|
| LaTeX | \circ | |
| HTML entity | ∘ | |
| Character | ∘ |
Meaning
Combines two functions into one that applies the right-hand function first and then the left-hand one, so (f ∘ g)(x) = f(g(x)). Compare with Maps To and Right Arrow.
How to read it
(f ∘ g)(x) = f(g(x))
is read “f composed with g of x equals f of g of x”.