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theorem proved term proof

D_forces_eight_tick

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formal statement (Lean)

  66theorem D_forces_eight_tick : 2 ^ 3 = eight_tick := by rfl

proof body

Term-mode proof.

  67
  68/-! ## Speed of Light -/
  69
  70/-- c = ℓ₀ / τ₀ (derived from units, not measured).
  71
  72In RS: c is the ratio of fundamental length to fundamental time.
  73The SI value 299,792,458 m/s comes from calibration.
  74-/

depends on (16)

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