fact: Definition grp_iso_pi_Tr `{Univalence} (n : nat) (X : pType) : GroupIsomorphism (Pi n.+1 X) (Pi n.+1 (pTr n.+1 X)) := grp_iso_pi_connmap n ptr.
imports: Basics Types Pointed HSet Modalities.Modality Truncations.Core Truncations.SeparatedTrunc Algebra.AbGroups WildCat