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theorem proved term proof

minimum_rest_mass_is_gap

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formal statement (Lean)

 308theorem minimum_rest_mass_is_gap :
 309    0 < massGap ∧ massGap = (Real.sqrt 5 - 2) / 2 :=

proof body

Term-mode proof.

 310  ⟨massGap_pos, rfl⟩
 311
 312/-! ## §9  The Arrow of Time from the Octave -/
 313
 314/-- **SE-009: The arrow of time**. Recognition advances monotonically. -/

depends on (10)

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