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def definition def or abbrev

visualBeautyCert

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formal statement (Lean)

 150def visualBeautyCert : VisualBeautyCert where
 151  symmetric_max := beautyScore_at_one

proof body

Definition body.

 152  golden_ratio_score := beautyScore_at_phi
 153  Jphi_band := Jphi_numerical_band
 154  rule_of_thirds_eq_45 := ruleOfThirds_lattice_period_eq
 155  cortical_lattice_match := rfl
 156
 157/-! ## §5. Single-statement summary -/
 158
 159/-- **VISUAL BEAUTY: ONE-STATEMENT THEOREM.**
 160
 161    Beauty score `B(a, b) = −J(a/b)`:
 162    (1) `B(a, a) = 0` for any `a ≠ 0` (perfect symmetry).
 163    (2) `B(φ, 1) = 3/2 − φ ≈ −0.118` (golden-ratio composition).
 164    (3) `J(φ) ∈ (0.11, 0.12)` (numerical band).
 165    (4) Rule-of-thirds lattice = 45 (the consciousness gap). -/

depends on (18)

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