lean4-htt/doc/examples/NFM2022/nfm16.lean
2022-05-23 18:20:37 -07:00

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/- Inaccessible names -/
example : ∀ x y : Nat, x = y → y = x := by
intros
apply Eq.symm
assumption
example : ∀ x y : Nat, x = y → y = x := by
intros
apply Eq.symm
rename_i a b hab
exact hab