∀ {J : Type v} [inst : CategoryTheory.SmallCategory J] {F : CategoryTheory.Functor J CommRingCat} [inst_1 : SizeOf J]
  (a a_1 : CommRingCat.Colimits.Prequotient F), sizeOf (a.mul a_1) = 1 + sizeOf a + sizeOf a_1