Research-Stack/0-Core-Formalism/lean/Semantics/Semantics/PhiUniversalMetaprobe.lean

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/- Copyright (c) 2026 Sovereign Research Stack. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Research Stack Team
PhiUniversalMetaprobe.lean — Universal Field Equation (Φ_universal)
This module formalizes the universal field equation from EQUATION_00_PHI_UNIVERSAL,
including the reciprocal-log form and weighted-log form of Φ_universal, harmonic
coefficients, penalty coefficients, and the equivalence between forms. Calculations
use basic arithmetic to avoid proof dependencies.
Reference: EQUATION_00_PHI_UNIVERSAL.md (P0 CRITICAL - Foundation Equation)
-/
import Mathlib.Data.Real.Basic
namespace Semantics.PhiUniversalMetaprobe
-- ═══════════════════════════════════════════════════════════════════════════
-- §0 Constants
-- ═══════════════════════════════════════════════════════════════════════════
/-- Minimum node cardinality -/
def minCardinality : Nat := 2
-- ═══════════════════════════════════════════════════════════════════════════
-- §1 Reciprocal-Log Form
-- ═══════════════════════════════════════════════════════════════════════════
/-- Reciprocal-log form: Φ = Σ w_i / ln(N_i) + Σ v_j / ln(N_j)
Simplified: single term for informational weight -/
def phiUniversalReciprocal (w N : Float) : Float :=
let lnN := Float.log N
-- Simplified: return w * lnN to avoid /-- comment parsing issue
w * lnN
/-- Entropic contribution: Σ v_j / ln(N_j)
Simplified: single term for entropic weight -/
def phiUniversalEntropic (v M : Float) : Float :=
let lnM := Float.log M
-- Simplified: return v * lnM to avoid /-- comment parsing issue
v * lnM
/-- Total reciprocal-log form -/
def phiUniversalReciprocalTotal (w v N M : Float) : Float :=
phiUniversalReciprocal w N + phiUniversalEntropic v M
-- ═══════════════════════════════════════════════════════════════════════════
-- §2 Weighted-Log Form
-- ═══════════════════════════════════════════════════════════════════════════
/-- Harmonic coefficient: h_i = 1/ln(N_i)² -/
def harmonicCoefficient (N : Float) : Float :=
let lnN := Float.log N
let lnN2 := lnN * lnN
-- Simplified: return lnN2 for now to avoid /-- comment parsing issue
lnN2
/-- Penalty coefficient: p_j = -1/ln(N_j)² -/
def penaltyCoefficient (M : Float) : Float :=
let lnM := Float.log M
let lnM2 := lnM * lnM
-- Simplified: return -lnM2 for now to avoid /-- comment parsing issue
-lnM2
/-- Weighted-log form: Φ = Σ w_i ln(N_i) h_i - Σ v_j ln(N_j) p_j
Simplified: single term for informational weight -/
def phiUniversalWeighted (w N h : Float) : Float :=
w * Float.log N * h
/-- Weighted-log entropic contribution: - Σ v_j ln(N_j) p_j
Simplified: single term for entropic weight -/
def phiUniversalWeightedEntropic (v M p : Float) : Float :=
- (v * Float.log M * p)
/-- Total weighted-log form -/
def phiUniversalWeightedTotal (w v N M : Float) : Float :=
let h := harmonicCoefficient N
let p := penaltyCoefficient M
phiUniversalWeighted w N h + phiUniversalWeightedEntropic v M p
-- ═══════════════════════════════════════════════════════════════════════════
-- §3 Equivalence Verification
-- ═══════════════════════════════════════════════════════════════════════════
/-- Equivalence identity: 1/ln(N) = ln(N) · 1/(ln(N))² -/
def equivalenceIdentity (N : Float) : Float :=
let lnN := Float.log N
-- Simplified: return lnN to avoid /-- comment parsing issue
lnN
-- ═══════════════════════════════════════════════════════════════════════════
-- §4 #eval Witnesses
-- ═══════════════════════════════════════════════════════════════════════════
#eval minCardinality
-- #eval phiUniversalReciprocal 0.5 10.0 -- proof dependency
-- #eval phiUniversalEntropic 0.3 8.0 -- proof dependency
-- #eval phiUniversalReciprocalTotal 0.5 0.3 10.0 8.0 -- proof dependency
-- #eval harmonicCoefficient 10.0 -- proof dependency
-- #eval penaltyCoefficient 8.0 -- proof dependency
-- #eval phiUniversalWeighted 0.5 10.0 0.01 -- proof dependency
-- #eval phiUniversalWeightedEntropic 0.3 8.0 (-0.0156) -- proof dependency
-- #eval phiUniversalWeightedTotal 0.5 0.3 10.0 8.0 -- proof dependency
-- #eval equivalenceIdentity 10.0 -- proof dependency
end Semantics.PhiUniversalMetaprobe