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lean4game/server/nng/NNG/Levels/Proposition/Level_3.lean

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import NNG.Metadata
import NNG.MyNat.Addition
Game "NNG"
World "Proposition"
Level 3
Title ""
open MyNat
Introduction
"
"
Statement
""
(P Q R S T U: Prop) (p : P) (h : P → Q) (i : Q → R)
(j : Q → T) (k : S → T) (l : T → U) : U := by
have q := h p
have t := j q
have u := l t
exact u
DisabledTactic apply
Conclusion
"
"