8 lines
294 B
Text
8 lines
294 B
Text
example (p : Prop) (f : ∀ q : Prop, q → q) : p = p :=
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by apply f _ _; refl
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example (p : Prop) (f : ∀ q : Prop, q → q) : p = p :=
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by apply f _ _; transitivity; refl
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example (p r : Prop) (f : ∀ q : Prop, (r = q → q) → q) (h2 : r): p :=
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by apply f _ (λ h, _); subst h; assumption
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