∀ {R : Type u_2} {M : Type u_4} [inst : Semiring R] [inst_1 : PartialOrder R] [inst_2 : AddCommGroup M]
  [inst_3 : PartialOrder M] [inst_4 : IsOrderedAddMonoid M] [inst_5 : Module R M] [inst_6 : PosSMulStrictMono R M]
  {x : M}, x ∈ ConvexCone.strictlyPositive R M ↔ 0 < x