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mandubian/id_compose.scala

Last active November 12, 2017 12:59
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id_compose.scala
// in the context of a Category
def f: A => B = ???
// ≌ representing isomorphism
f ○ Id ≌ Id ○ f ≌ f
// associativity
(h ○ g) ○ f ≌ h ○ (g ○ f)
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