∀ (K : Type u_1) [inst : Field K] [inst_1 : NumberField K] (a a_1 : NumberField.mixedEmbedding.mixedSpace K),
  a = a_1 →
    NumberField.mixedEmbedding.fundamentalCone.normLeOne K a =
      NumberField.mixedEmbedding.fundamentalCone.normLeOne K a_1