proposition: Lemma isConnected_BG (G:gr) : isConnected (B G).
proof: Proof. apply baseConnectedness. apply isBaseConnected_BG. 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