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structure definition def or abbrev

SelfSimilarity

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formal statement (Lean)

 108structure SelfSimilarity (X : Type*) where
 109  /-- The scaling factor. -/
 110  factor : ℝ
 111  /-- Positive factor. -/
 112  factor_pos : 0 < factor
 113  /-- The scaling map. -/
 114  scale : X → X
 115
 116/-- The golden ratio φ = (1 + √5) / 2. -/

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