proposition: Lemma isBaseConnected_BG (G:gr) : isBaseConnected (B G).
proof: Proof. intros X. use (hinhfun _ (torsor_nonempty X)); intros x. exact (torsor_eqweq_to_path (triviality_isomorphism X x)). Defined.
imports: UniMath.Foundations.All UniMath.MoreFoundations.Propositions UniMath.MoreFoundations.Notations UniMath.MoreFoundations.Univalence UniMath.MoreFoundations.Tactics UniMath.Algebra.Monoids UniMath.Algebra.Groups UniMath.Combinatorics.OrderedSets