fact: Definition isequiv_precompose_O_inverts `{Funext} {A B : Type} (f : A -> B) `{O_inverts f} (Z : Type) `{In O Z} : IsEquiv (fun g:B->Z => g o f).
imports: HoTT.Basics HoTT.Types Equiv.BiInv Extensions HProp HFiber NullHomotopy Limits.Pullback PathAny Colimits.Pushout