fact: Definition mapinO_unfunctor_sum_l {A A' B B'} (h : A + B -> A' + B') (Ha : forall a:A, is_inl (h (inl a))) (Hb : forall b:B, is_inr (h (inr b))) `{MapIn O _ _ h} : MapIn O (unfunctor_sum_l h Ha).
imports: HoTT.Basics HoTT.Types Equiv.BiInv Extensions HProp HFiber NullHomotopy Limits.Pullback PathAny Colimits.Pushout