Function Compositions
In mathematics, the composition operator takes two functions, and , and returns a new function . Thus, the function g is applied after applying f to x. is pronounced "the composition of g and f".
Result
g ∘ f = {}
dom(g ∘ f) =
im(g ∘ f) =
(g ∘ f)-1 = {}
dom((g ∘ f)-1) =
im((g ∘ f)-1) =