fact: Definition cancelL_isequiv_conn_map {A B C : Type} (f : A -> B) (g : B -> C) `{IsEquiv _ _ g} `{IsConnMap O _ _ (g o f)} : IsConnMap O f.
imports: HoTT.Basics HoTT.Types Equiv.BiInv Extensions HProp HFiber NullHomotopy Limits.Pullback PathAny Colimits.Pushout