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theorem

phi_unique_self_similar

proved
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Self-similar closure forces the golden ratio: r² = r + 1.

module
IndisputableMonolith.Foundation.PhiForcing
domain
Foundation
line
186 · github
papers citing
3 papers (below)

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IndisputableMonolith.Foundation.PhiForcing on GitHub at line 186.

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formal source

 183  nlinarith [sq_nonneg (r - φ), sq_nonneg (r + φ - 1), phi_pos, hsq5]
 184
 185/-- The golden constraint characterizes φ among positive reals. -/
 186theorem phi_unique_self_similar {r : ℝ} (hr_pos : 0 < r) (hr_eq : satisfies_golden_constraint r) :
 187    r = φ :=
 188  golden_constraint_unique hr_pos hr_eq
 189
 190/-! ## Discrete Ledger with Self-Similarity -/
 191
 192/-- A discrete ledger structure (from LedgerForcing). -/
 193structure DiscreteLedger where
 194  /-- The ledger structure -/
 195  ledger : LedgerForcing.Ledger
 196  /-- A concrete discrete configuration space witnessing finite step structure. -/
 197  discrete_space : DiscretenessForcing.DiscreteConfigSpace
 198
 199/-- Self-similarity property for a discrete ledger. -/
 200def is_self_similar (_L : DiscreteLedger) (r : ℝ) : Prop :=
 201  ∃ S : SelfSimilar, S.ratio = r
 202
 203/-! ## Phi Forcing Theorem -/
 204
 205/-- **PHI FORCING THEOREM**: In a self-similar discrete ledger, the scale ratio is φ.
 206
 207If:
 2081. L is a discrete ledger (from DiscretenessForcing + LedgerForcing)
 2092. L is self-similar with scale ratio r
 2103. r satisfies the compositional constraint r² = r + 1
 211
 212Then: r = φ = (1 + √5)/2 -/
 213theorem phi_forced (L : DiscreteLedger) (r : ℝ) (hr : is_self_similar L r) : r = φ := by
 214  rcases hr with ⟨S, rfl⟩
 215  exact golden_constraint_unique S.ratio_pos (self_similar_forces_golden_constraint S)
 216