lean2/tests/lean/hott/id_tac5.hlean

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open equiv
constant rec_on_ua {A B : Type} {P : A ≃ B → Type}
(f : A ≃ B) (H : Π(q : A = B), P (equiv_of_eq q)) : P f
set_option pp.universes true
set_option pp.implicit true
set_option pp.notation false
check @rec_on_ua
attribute rec_on_ua [recursor]
print [recursor] rec_on_ua