import Mathlib /- Original: j = OK (a−K N ), when s − j ∈ J−(N − aN ), N − aN Kd -/ theorem eq_3b5cf8d2d4956d3c (J : ℕ) (K : ℕ) (Kd : ℕ) (N : ℕ) (OK : ℕ) (a : ℕ) (aN : ℕ) (j : ℕ) (s : ℕ) (when : ℕ) : j = OK (a-K N ) ∧ when s - j ∈ J-(N - aN ) ∧ N - aN Kd := by omega