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lean4game/server/nng/NNG/Levels/Function/Level_8.lean

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import NNG.Metadata
import NNG.MyNat.Addition
Game "NNG"
World "Function"
Level 8
Title ""
open MyNat
Introduction
"
"
Statement
""
(P Q : Type) : (P → Q) → ((Q → Empty) → (P → Empty)) := by
intros f h p
apply h
apply f
exact p
Conclusion
"
"