30 lines
1.1 KiB
Text
30 lines
1.1 KiB
Text
Set: pp::colors
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Set: pp::unicode
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Imported 'macros'
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Using: Nat
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Assumed: Induction
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Failed to solve
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⊢ ∀ m : ℕ, 0 + m = m + 0 ≺ ?M::3 0
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induction2.lean:10:3: Type of argument 2 must be convertible to the expected type in the application of
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Induction
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with arguments:
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?M::3
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λ m : ℕ, Nat::add_zerol m ⋈ symm (Nat::add_zeror m)
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λ (n : ℕ) (iH : ?M::3 n) (m : ℕ),
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@trans ℕ
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(n + 1 + m)
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(m + n + 1)
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(m + (n + 1))
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(@trans ℕ
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(n + 1 + m)
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(n + m + 1)
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(m + n + 1)
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(Nat::add_succl n m)
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(@subst ?M::14
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?M::15
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?M::16
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(λ x : ?M::14,
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@eq ((?M::48[lift:0:1]) x) ((?M::49[lift:0:1]) x) ((?M::50[lift:0:1]) x))
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(refl (n + m + 1))
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iH))
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(symm (Nat::add_succr m n))
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