fact: Definition equiv_trijoin_twist (A B C : Type) : TriJoin A B C <~> TriJoin B A C := equiv_homotopic_inverse (equiv_trijoin_twist' A B C) (trijoin_twist_homotopic A B C) (trijoin_twist_homotopic B A C).
imports: Basics Types WildCat Join.Core Join.TriJoin Spaces.Nat.Core