fact: Definition is_invertible_2cell_comma_ump_cell : is_invertible_2cell (comma_ump_cell Hp φ ψ α β r).
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.Bicategories.Core.Bicat UniMath.Bicategories.Core.Invertible_2cells UniMath.Bicategories.Core.Univalence