fact: Definition lam_monotone_function {Z : hSet} {RZ : PartialOrder Z} (f : monotone_function (prod_PartialOrder RX RZ) RY) : monotone_function RZ monotone_function_PartialOrder.
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.OrderTheory.Posets.Basics