2 lines
133 B
Text
2 lines
133 B
Text
theorem cast_heq₂ : ∀ {A B : Type} (H : A = B) (a : A), cast H a == a
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| A ⌞A⌟ (eq.refl ⌞A⌟) a := heq_of_eq $ cast_eq _ _
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