theorem
proved
term proof
coronalTime_pos
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formal statement (Lean)
46theorem coronalTime_pos (k : ℕ) : 0 < coronalTime k := by
proof body
Term-mode proof.
47 unfold coronalTime referenceTime
48 have : 0 < phi ^ k := pow_pos Constants.phi_pos k
49 linarith [this]
50