fact: Definition path_hfiber_cxfib' {A B C : AbGroup} {E : AbSES C B} {F : AbSES (middle E) A} {p : abses_pullback (inclusion E) F $== pt} (X Y : hfiber_cxfib' (B:=B) E F p) : Type.
imports: Basics Types HSet HFiber Limits.Pullback WildCat Pointed.Core Homotopy.ExactSequence Groups.QuotientGroup AbGroups.AbelianGroup AbGroups.AbPullback AbGroups.Biproduct AbSES.Core AbSES.Pullback Modalities.Identity Modalities.Modality Truncations.Core