티스토리 뷰
합성함수 하니까 먼저 고등학교 때 배웠던 것이 생각 났다.
f: X -> Y
g: Y-> Z
g ◦ f : X->Z
g ◦f : x-> g(f(x))
g◦f != f◦g
그런데 이것은 composition !! 입니다.
https://mathworld.wolfram.com/Composition.html
Composition -- from Wolfram MathWorld
Composition The nesting of two or more functions to form a single new function is known as composition. The composition of two functions and is denoted , where is a function whose domain includes the range of . The notation is sometimes used to explicitly
mathworld.wolfram.com
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