∀ {𝕜 : Type u_1} {β : Type u_4} [inst : Semiring 𝕜] [inst_1 : PartialOrder 𝕜] [inst_2 : AddCommMonoid β]
  [inst_3 : LinearOrder β] [IsOrderedAddMonoid β] [inst_5 : Module 𝕜 β] [PosSMulMono 𝕜 β] (r s : β),
  Convex 𝕜 (Set.uIcc r s)