def definition def or abbrev

`hypothesis2`

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formal statement (Lean)

  99noncomputable def hypothesis2 : ℝ := (phi - 1) / 2

Definition body.

 100
 101/-- Hypothesis 3: λ = 1/φ²
 102
 103    1/2.618 = 0.382
 104
 105    Even larger. -/

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Lean names referenced from this declaration's body.