fact: Definition equiv_O_prod_unit_precompose {fs : Funext} (A B C : Type) `{In O C} : ((O A) * (O B) -> C) <~> (A * B -> C) := Build_Equiv _ _ _ (isequiv_O_prod_unit_precompose A B C).
imports: HoTT.Basics HoTT.Types Equiv.BiInv Extensions HProp HFiber NullHomotopy Limits.Pullback PathAny Colimits.Pushout