fact: Definition equiv_path_hfiber_cxfib' `{Univalence} {A B C : AbGroup} {E : AbSES C B} (F : AbSES (middle E) A) (p : abses_pullback (inclusion E) F $== pt) (U V : hfiber_cxfib' E F p) : path_hfiber_cxfib' U V <~> U = V.
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