See https://leanprover.zulipchat.com/#narrow/stream/270676-lean4/topic/simp.20match.20question
5 lines
66 B
Text
5 lines
66 B
Text
x : Int
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h : x = 2
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⊢ Int.ofNat (2 / 1) = x
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n : Nat
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⊢ n * 0 = 0
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