fact: Definition equiv_O_pushout_to_O_pushr (c : C) : equiv_O_pushout (to O (Pushout f g) (pushr c)) = to O (Pushout (O_functor f) (O_functor g)) (pushr (to O C c)).
imports: HoTT.Basics HoTT.Types Equiv.BiInv Extensions HProp HFiber NullHomotopy Limits.Pullback PathAny Colimits.Pushout