136theorem cube_uniqueness : 137 ∀ D : ℕ, (linkingNumber D ≠ 0) ↔ D = 3 := by
proof body
Term-mode proof.
138 intro D 139 constructor 140 · intro h 141 unfold linkingNumber at h 142 split_ifs at h with hD 143 · exact hD 144 · contradiction 145 · intro h 146 rw [h] 147 unfold linkingNumber 148 simp 149 150/-! ## 8-Tick Uniqueness -/ 151 152/-- A Gray code cycle of length T on D dimensions. -/
depends on (15)
Lean names referenced from this declaration's body.