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lean4game/server/testgame/TestGame/Levels/Function/L03_Composition.lean

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2 years ago
import TestGame.Metadata
import Mathlib
Game "TestGame"
World "Function"
Level 3
Title ""
Introduction
"
Komposition von Funktionen kann als `g ∘ f` geschrieben werden.
TODO
"
Statement
"TODO: Find an exercise."
(U S T V : Type _) (f : U → V) (g : V → T) (x : U) : (g ∘ f) x = g (f x) := by
2 years ago
simp only [Function.comp_apply]