∀ (K : Type u_1) [inst : Field K] [inst_1 : NumberField K]
  (J : ↥(nonZeroDivisors (Ideal (NumberField.RingOfIntegers K))))
  (motive : ↑(NumberField.mixedEmbedding.fundamentalCone.idealSet K J) → Sort u_2)
  (a : NumberField.mixedEmbedding.mixedSpace K) (ha : a ∈ NumberField.mixedEmbedding.fundamentalCone.idealSet K J)
  (h_1 :
    (a : NumberField.mixedEmbedding.mixedSpace K) →
      (ha : a ∈ NumberField.mixedEmbedding.fundamentalCone.idealSet K J) → motive ⟨a, ha⟩),
  (match ⟨a, ha⟩ with
    | ⟨a, ha⟩ => h_1 a ha) =
    h_1 a ha