∀ {K : Type u_1} [inst : DivisionRing K] [inst_1 : LinearOrder K] [inst_2 : IsOrderedRing K] [inst_3 : Archimedean K]
  {M : Type u_2} [inst_4 : AddCommGroup M] [inst_5 : LinearOrder M] [inst_6 : IsOrderedAddMonoid M]
  [inst_7 : Module K M] [inst_8 : IsOrderedModule K M] {R : Type u_3} [inst_9 : AddCommGroup R]
  [inst_10 : LinearOrder R] [inst_11 : Module K R] (seed : HahnEmbedding.Seed K M R) (c : FiniteArchimedeanClass M),
  seed.coeff' c = seed.coeff c ∘ₗ seed.baseDomain.subtype.submoduleComap (seed.stratum c)