theorem
proved
term proof
defectIterate_zero_param
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formal statement (Lean)
57@[simp] theorem defectIterate_zero_param (n : ℕ) : defectIterate 0 n = 0 := by
proof body
Term-mode proof.
58 simp [defectIterate, Real.cosh_zero]
59
60/-- d₀(t) = cosh(t) − 1 = J_log(t). -/