Definition monotone_function {X₁ X₂ : hSet} (R₁ : PartialOrder X₁) (R₂ : PartialOrder X₂) : UU := ∑ (f : X₁ → X₂), is_monotone R₁ R₂ f.
Require Import UniMath.Foundations.All. Require Import UniMath.MoreFoundations.All. Require Import UniMath.OrderTheory.Posets.Basics.