fact: Definition ε' (X Y : Torsor ℤ) (e : X = Y) (x : X) : ! s x @ s (transportf elem e x) = e.
imports: UniMath.Foundations.All UniMath.MoreFoundations.PartA UniMath.MoreFoundations.Propositions UniMath.MoreFoundations.Equivalences UniMath.MoreFoundations.PathsOver UniMath.Algebra.Monoids UniMath.SyntheticHomotopyTheory.AffineLine UniMath.NumberSystems.Integers UniMath.Algebra.BinaryOperations UniMath.Algebra.GroupAction UniMath.Algebra.Groups