33 lines
718 B
Text
33 lines
718 B
Text
α : Type u_1
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as bs : List α
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⊢ as ++ bs ++ bs = as ++ (bs ++ bs)
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rewrite.lean:12:20-12:29: error: tactic 'rewrite' failed, did not find instance of the pattern in the target expression
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List.reverse (List.reverse ?as)
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α : Type u_1
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as bs : List α
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⊢ as ++ [] ++ [] ++ bs ++ bs = as ++ (bs ++ bs)
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x y z : Nat
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h₁ : x = y
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h₂ : y = z
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⊢ x = z
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rewrite.lean:31:9-31:20: error: tactic 'rewrite' failed, did not find instance of the pattern in the current goal
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x y z : Nat
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h₁ : 0 + x = y
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h₂ : 0 + y = z
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⊢ x = z
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m n k : Nat
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: n = m
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h : k = m
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⊢ k = n
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rewrite.lean:49:69-50:10: error: unsolved goals
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α : Type
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p : Prop
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a b c : α
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h : p → a = b
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⊢ b = c
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α : Type
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p : Prop
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a b c : α
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h : p → a = b
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⊢ p
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