fact: Definition underlyingAction_injectivity_inv_comp {G:gr} {X Y:Torsor G} (f:underlyingAction X = underlyingAction Y) : maponpaths underlyingAction (invmap underlyingAction_injectivity f) = f.
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