fact: Definition sqq {C: predoublecategory_ob_mor_sq_data} {a b c d : C} (f: a -h-> b) (g: a -v-> c) (h: b -v-> d) (k: c -h-> d): UU := get_predoublecat_sq C a b c d f g h k.
imports: UniMath.Foundations.Propositions UniMath.Foundations.Sets UniMath.MoreFoundations.PartA UniMath.MoreFoundations.Notations UniMath.CategoryTheory.Core.Prelude UniMath.CategoryTheory.TwoSidedDisplayedCats.TwoSidedDispCat UniMath.CategoryTheory.TwoSidedDisplayedCats.Univalence