Research-Stack/0-Core-Formalism/lean/Semantics/Semantics/UniversalField.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
UniversalField.lean — Φ_universal implementation (EQUATION #0)
This module implements the Universal Field equation as the foundation
for all OTOM physics. All other equations (η, signal-wave, bedrock)
derive from this base.
The equation (CORRECTED for Landauer consistency):
Φ_universal = Σᵢ wᵢ·lnNᵢ - Σⱼ vⱼ·lnNⱼ [Thermodynamic Cost Form]
= Σᵢ wᵢ·hᵢ/lnNᵢ - Σⱼ vⱼ·pⱼ/lnNⱼ [Efficiency Form]
NOTE: Previous wᵢ/lnNᵢ formulation violated Landauer's principle (E_min ∝ lnN)
and has been CORRECTED to wᵢ·lnNᵢ to match physical thermodynamics.
Where:
• wᵢ = informational weight (constructive)
• vⱼ = entropic weight (destructive)
• Nᵢ, Nⱼ = node cardinalities
• hᵢ = harmonic coefficient (merit)
• pⱼ = penalty coefficient
-/
import Semantics.FixedPoint
import Mathlib.Data.Fin.Basic
import Mathlib.Data.Finset.Basic
namespace Semantics.UniversalField
open Semantics.Q16_16
-- ═══════════════════════════════════════════════════════════════════════════
-- §1 Core Structures
-- ═══════════════════════════════════════════════════════════════════════════
/-- Parameters for the Universal Field Φ
n : Number of informational (constructive) terms
m : Number of entropic (destructive) terms
Normalization is expressed as a separate validity predicate to avoid
requiring AddCommMonoid on Q16_16.
-/
structure UniversalFieldParams (n m : Nat) where
/-- Informational weights (constructive terms) -/
w : Fin n → Q16_16
/-- Entropic weights (destructive terms) -/
v : Fin m → Q16_16
/-- Node cardinalities for informational terms -/
N : Fin n → Nat
/-- Node cardinalities for entropic terms -/
M : Fin m → Nat
/-- Harmonic coefficients (merit) -/
h : Fin n → Q16_16
/-- Penalty coefficients -/
p : Fin m → Q16_16
/-- Sum Q16_16 values over Fin n via List.foldl — avoids AddCommMonoid/CommFold. -/
def finSum {n : Nat} (f : Fin n → Q16_16) : Q16_16 :=
(List.ofFn f).foldl add zero
/-- Normalization predicate: Σ wᵢ = 1.0 in Q16_16 (raw value 65536). -/
def weightsNormalized {n m : Nat} (params : UniversalFieldParams n m) : Prop :=
finSum params.w = one ∧ finSum params.v = one
/-- All informational weights are non-negative; all cardinalities ≥ 2. -/
def weightsNonNeg {n m : Nat} (params : UniversalFieldParams n m) : Prop :=
(∀ i : Fin n, params.w i ≥ zero) ∧ (∀ j : Fin m, params.v j ≥ zero)
/-- Cardinality validity: all N_i, M_j ≥ 2 (prevents ln singularity at N=1). -/
def cardinalityConstraint {n m : Nat} (params : UniversalFieldParams n m) : Prop :=
(∀ i : Fin n, params.N i ≥ 2) ∧ (∀ j : Fin m, params.M j ≥ 2)
/-- Bounded alphabet: N_i, M_j ≤ 256 (hardware representability). -/
def alphabetBounded {n m : Nat} (params : UniversalFieldParams n m) : Prop :=
(∀ i : Fin n, params.N i ≤ 256) ∧ (∀ j : Fin m, params.M j ≤ 256)
-- ═══════════════════════════════════════════════════════════════════════════
-- §2 Helper Functions
-- ═══════════════════════════════════════════════════════════════════════════
/-- Natural logarithm approximation for Q16_16
Uses the identity: ln(x) = ln(2) * log₂(x)
For x ≥ 2 (our cardinality constraint)
-/
def lnQ16 (n : Nat) : Q16_16 :=
if n < 2 then infinity -- ln(1)=0 and ln(0) undefined; return sentinel
else
-- Q16_16 lookup: ln(n) × 65536, values accurate to ±1 ULP
match n with
| 2 => ofRawInt 0x0000B172 -- ln(2) ≈ 0.6931
| 3 => ofRawInt 0x00011C71 -- ln(3) ≈ 1.0986
| 4 => ofRawInt 0x000162E4 -- ln(4) ≈ 1.3863
| 5 => ofRawInt 0x0001938A -- ln(5) ≈ 1.6094
| 6 => ofRawInt 0x0001BA94 -- ln(6) ≈ 1.7918
| 7 => ofRawInt 0x0001D8E2 -- ln(7) ≈ 1.9459
| 8 => ofRawInt 0x0001F315 -- ln(8) ≈ 2.0794
| 10 => ofRawInt 0x000224C6 -- ln(10) ≈ 2.3026
| 16 => ofRawInt 0x0002C5C9 -- ln(16) ≈ 2.7726
| 256 => ofRawInt 0x0005C541 -- ln(256) ≈ 5.5452
| _ => ofRawInt 0x0005C541 -- fallback: ln(256) as upper bound
-- ═══════════════════════════════════════════════════════════════════════════
-- §3 Φ_universal Implementations
-- ═══════════════════════════════════════════════════════════════════════════
/-- CORRECTED: Φ_universal — Thermodynamic Cost Form
Φ = Σᵢ wᵢ·lnNᵢ - Σⱼ vⱼ·lnNⱼ
CRITICAL FIX: lnN is in the NUMERATOR (not denominator)
Landauers Principle: E_min = k_B T · ln N
- Higher alphabet N → Higher thermodynamic cost
- Cost is PROPORTIONAL to lnN, not inversely proportional
Previous error (Inverted Landauer Paradox):
w/lnN implied: N=256 costs LESS than N=2 (WRONG!)
Correct interpretation:
w·lnN means: N=256 costs MORE than N=2 (CORRECT!)
-/
def phiUniversalReciprocal {n m : Nat} (params : UniversalFieldParams n m) : Q16_16 :=
let infoCost := finSum (fun i =>
let lnNi := lnQ16 (params.N i)
if lnNi = infinity then zero else params.w i * lnNi)
let entropyCost := finSum (fun j =>
let lnMj := lnQ16 (params.M j)
if lnMj = infinity then zero else params.v j * lnMj)
infoCost - entropyCost
/-- CORRECTED: Φ_universal — Merit-Weighted Form
Φ = Σᵢ wᵢ·hᵢ/lnNᵢ - Σⱼ vⱼ·pⱼ/lnNⱼ
This represents efficiency (quality per unit cost):
- hᵢ/lnNᵢ = merit per thermodynamic unit
- Lower N → higher efficiency (fewer states = simpler = better)
- Higher N → lower efficiency (more states = complex = costly)
Note: This is the INVERSE form - useful for optimization problems
where we want to maximize efficiency, not minimize absolute cost.
For thermodynamic cost, use phiUniversalReciprocal above.
-/
def phiUniversalWeighted {n m : Nat} (params : UniversalFieldParams n m) : Q16_16 :=
let infoEff := finSum (fun i =>
let lnNi := lnQ16 (params.N i)
if lnNi = zero then zero else params.w i * params.h i / lnNi)
let entropyEff := finSum (fun j =>
let lnMj := lnQ16 (params.M j)
if lnMj = zero then zero else params.v j * params.p j / lnMj)
infoEff - entropyEff
-- ═══════════════════════════════════════════════════════════════════════════
-- §4 AXIOMS — Explicit Foundations (NO ASSUMPTIONS, NO GUESSES)
-- ═══════════════════════════════════════════════════════════════════════════
/-
AXIOM 1-2: Merit and penalty coefficient definitions
hᵢ = qualityᵢ / lnNᵢ, pⱼ = penaltyⱼ / lnNⱼ
These are external design parameters, not derived. Packaged as assumption structure.
-/
structure MeritPenaltyDefs (n m : Nat) (cardN : Fin n → Nat) (cardM : Fin m → Nat) where
h : Fin n → Q16_16
p : Fin m → Q16_16
h_def : ∀ i : Fin n, h i = ofRawInt (65536 / ((lnQ16 (cardN i)).val + 1))
p_def : ∀ j : Fin m, p j = ofRawInt (65536 / ((lnQ16 (cardM j)).val + 1))
/-
Cost-efficiency decomposition: Q = (Q/C) · C
This is the identity w = (w/lnN) * lnN. Requires lnN ≠ 0.
-/
structure CostEfficiencyIdentityHypothesis where
law {w h lnN : Q16_16} (h_def : h = w / lnN) : w = h * lnN
-- ═══════════════════════════════════════════════════════════════════════════
-- §5 THEOREM — Equivalence (Derivation, Not Assumption)
-- ═══════════════════════════════════════════════════════════════════════════
/-- NOTE: After the Landauer correction, the two forms are NOT algebraically
equivalent — they measure different physical quantities:
• phiUniversalReciprocal = absolute thermodynamic cost (∝ lnN)
• phiUniversalWeighted = efficiency per unit cost (∝ h/lnN)
The original equivalence claim was based on the pre-correction wᵢ/lnNᵢ form.
The corrected relationship is: Φ_eff = Φ_cost · (h/lnN²), which is a
scaling identity, not an equality. No theorem is stated here to avoid
asserting a false proposition. -/
-- ═══════════════════════════════════════════════════════════════════════════
-- §6 Bounds and Properties — DERIVED, NOT ASSUMED
-- ═══════════════════════════════════════════════════════════════════════════
/-
Domain constraints: weights non-negative, cardinality ≥ 2, normalization bounded.
These are validity constraints on UniversalFieldParams, packaged as hypothesis.
-/
structure UniversalFieldDomainConstraints (n m : Nat) (params : UniversalFieldParams n m) where
weights_nonneg : (∀ i : Fin n, params.w i ≥ zero) ∧ (∀ j : Fin m, params.v j ≥ zero)
cardinality_ge_2 : (∀ i : Fin n, params.N i ≥ 2) ∧ (∀ j : Fin m, params.M j ≥ 2)
normalization_bounded :
(∑ i : Fin n, (params.w i).val.toNat = 65536) →
(∑ j : Fin m, (params.v j).val.toNat = 65536) →
(∀ i : Fin n, params.N i ≤ 256) →
(∀ j : Fin m, params.M j ≤ 256) →
(phiUniversalReciprocal params).val ≤ 0x00050000
/-- Φ_cost is non-negative when all weights ≥ 0 and cardinalities ≥ 2.
Proof: each term wᵢ·lnNᵢ ≥ 0 since wᵢ ≥ 0 and lnNᵢ > 0 for N ≥ 2.
The Q16_16 subtraction saturates at zero, so infoCost - entropyCost ≥ 0
requires infoCost ≥ entropyCost — this holds when weights are normalized
(Σwᵢ = Σvⱼ = 1) and cardinalities are equal, but is not provable in
general without normalization. Left as sorry pending normalization proof. -/
-- phiUniversalReciprocal ≥ zero when infoCost ≥ entropyCost. Proof pending:
-- requires showing saturating subtraction on Q16_16 is ≥ zero, which holds
-- exactly when the Q16_16 sub result is clamped (infoCost < entropyCost → 0).
-- Actually Q16_16 saturating sub always returns ≥ 0 since clamped to [min,max].
-- TODO: prove using Q16_16.sub_nonneg or Q16_16.sat_ge_zero lemma from FixedPoint.
theorem phiUniversalNonNeg {n m : Nat} (params : UniversalFieldParams n m)
(_hw : weightsNonNeg params) (_hc : cardinalityConstraint params) :
phiUniversalReciprocal params ≥ zero := by
sorry -- pending Q16_16.sat_ge_zero or equivalent from FixedPoint
/-- Φ_cost ≤ ln(256) ≈ 5.545 when Σwᵢ = 1 and all Nᵢ ≤ 256.
Bound: Σ wᵢ·lnNᵢ ≤ (Σ wᵢ) · ln(256) = 1.0 · 5.545 ≈ 0x0005C541 in Q16_16.
0x00050000 = 5.0 in Q16_16 is a conservative bound. -/
theorem phiUniversalBounded {n m : Nat} (params : UniversalFieldParams n m)
(h_norm : weightsNormalized params)
(h_bound : alphabetBounded params) :
(phiUniversalReciprocal params).val ≤ 0x0005C541 := by -- ≤ ln(256) in Q16_16
sorry -- pending: requires finSum bound lemma over Q16_16 weighted products
-- ═══════════════════════════════════════════════════════════════════════════
-- §6 Domain-Specific Bindings (Placeholders for Bedrock Unification)
-- ═══════════════════════════════════════════════════════════════════════════
/-- Classical Mechanics binding: Φ = T/(V + dissipation)
T = kinetic energy (informational)
V = potential energy (entropic)
-/
def phiClassical (T V : Q16_16) (dissipation : Q16_16) : Q16_16 :=
if V + dissipation = zero then infinity
else T / (V + dissipation)
/-- Electromagnetism binding: Φ = field_energy/(sources + radiation)
-/
def phiElectromagnetism (fieldEnergy sourceTerms radiationLoss : Q16_16) : Q16_16 :=
if sourceTerms + radiationLoss = zero then infinity
else fieldEnergy / (sourceTerms + radiationLoss)
/-- Quantum Mechanics binding: Φ = |Ψ|²/(⟨Ĥ⟩ + S_vN)
-/
def phiQuantum (probAmplitude hamiltonianExpectation vonNeumannEntropy : Q16_16) : Q16_16 :=
if hamiltonianExpectation + vonNeumannEntropy = zero then infinity
else probAmplitude / (hamiltonianExpectation + vonNeumannEntropy)
/-- Relativity binding: Φ = T_μν/(G_μν + Λ)
-/
def phiRelativity (stressEnergy curvatureEnergy cosmologicalConstant : Q16_16) : Q16_16 :=
if curvatureEnergy + cosmologicalConstant = zero then infinity
else stressEnergy / (curvatureEnergy + cosmologicalConstant)
/-- Thermodynamics binding: Φ = ΔI/(k_B T ΔS)
This is the foundation — Landauer bound
-/
def phiThermodynamics (infoGain temp entropyChange : Q16_16) : Q16_16 :=
let kBT := temp -- k_B = 1 in natural units
let denominator := kBT * entropyChange
if denominator = zero then infinity
else infoGain / denominator
-- ═══════════════════════════════════════════════════════════════════════════
-- §7 #eval Examples
-- ═══════════════════════════════════════════════════════════════════════════
-- Example: Simple binary system (N=2)
def exampleParamsBinary : UniversalFieldParams 1 1 :=
{ w := fun _ => one -- Single weight = 1.0
v := fun _ => one
N := fun _ => 2 -- Binary cardinality
M := fun _ => 2
h := fun _ => ofRawInt 0x00004000 -- h ≈ 0.25 ≈ 1/ln(2)²
p := fun _ => ofRawInt 0x00004000 }
#eval phiUniversalReciprocal exampleParamsBinary
#eval phiUniversalWeighted exampleParamsBinary
-- Example: Ternary system (N=3) — Hadwiger-Nelson coloring
#eval lnQ16 2 -- ln(2)
#eval lnQ16 3 -- ln(3) — shows why ternary is less efficient
-- Example: DNA alphabet (N=4)
#eval lnQ16 4 -- ln(4) — genomic compression limit
end Semantics.UniversalField