theorem proved term proof

`chi8_mod2`

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formal statement (Lean)

  56@[simp] theorem chi8_mod2 (k : ℕ) : chi8 (8 * k + 2) = 0 := by

Term-mode proof.

  57  unfold chi8
  58  simp [Nat.add_mod]
  59

Lean names referenced from this declaration's body.