14 lines
366 B
Text
14 lines
366 B
Text
open nat tactic
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universe variables u variables {A : Type u}
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attribute [simp]
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lemma succ_eq_add (n : nat) : succ n = n + 1 :=
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rfl
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example (n m : nat) (H : succ (succ n) = succ m) : true :=
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by do H ← get_local `H,
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t ← infer_type H,
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s ← simp_lemmas.mk_default,
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t' ← s^.dsimplify [] t,
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trace t',
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exact (expr.const `trivial [])
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