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import TestGame.Metadata
import Mathlib
Game "TestGame"
World "TestWorld"
Level 1
Title "Annahmen"
Introduction "yadaa yadaa"
class MyClass (n : ℕ) where
Statement name
"Beweise dieses Lemma."
(n m : ℕ) : CommSemigroup ℕ where
mul := fun i j => 0
mul_comm := sorry
mul_assoc := sorry
--@[exercise]
instance instTest (n m : ℕ) : CommSemigroup ℕ where
mul := fun i j => 0
mul_comm := by
sorry
mul_assoc := by
sorry
--@[exercise]
lemma asdf (a b c d : ℕ) (h₁ : c = d) (h₂ : a = b) (h₃ : a = d) : b = c := by