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lean4game/server/nng/NNG/Levels/Proposition/Level_4.lean

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2 years ago
import NNG.Metadata
import NNG.MyNat.Addition
Game "NNG"
World "Proposition"
Level 4
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
apply l
apply j
apply h
exact p
DisabledTactic «have»
Conclusion
"
"