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def definition def or abbrev

tau_rec

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formal statement (Lean)

 212@[simp] noncomputable def tau_rec : Time :=

proof body

Definition body.

 213  Constants.RSUnits.tau_rec_display U
 214
 215/-- Kinematic wavelength display: λ_kin = (2π)/(8 ln φ) · ℓ₀. -/

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