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theorem proved term proof

harmonic5_in_gamma

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formal statement (Lean)

 263theorem harmonic5_in_gamma : inFreqBand (schumannRS 5) 30 100 := by

proof body

Term-mode proof.

 264  unfold inFreqBand
 265  exact ⟨by linarith [harmonic5_bounds.1], by linarith [harmonic5_bounds.2]⟩
 266
 267/-- The five Schumann harmonics span exactly three EEG bands:
 268    theta (fundamental), beta (harmonics 2–4), gamma (harmonic 5). -/

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