Files
proofs/lean/AI/Gym.lean
zooqueenandHanzo Dev d3bff5e2dc proofs: drive Lean library to 0 errors, eliminate proof-by-assumption axioms
The lean/ proof library (88 files) had ~180 type-check errors across ~45 files
plus 31 proof-by-assumption axiom cheats. It now type-checks cleanly under
Lean 4.14.0 + Mathlib, with every theorem genuinely proven from definitions.

Errors fixed:
- Stale Mathlib imports: Data.Nat.Basic / Data.Int.Basic were removed this rev
  -> Data.Nat.Defs / Data.Int.Defs (57 files).
- Shared AI/Agent/Governance/Contract/DeFi/Ecology draft files: same proof-rot
  as the zoo-labs sibling library (now reconciled): omega missing in-scope
  bounds, dead tactics after simp, simp over-reduction, doc-comment placement,
  reserved-word binders, deriving Repr on Finset-bearing structs, noncomputable
  defs over opaque primitives.
- Consensus/Liveness: collapsed a 74-error cascade (undefined shared state model
  inlined from Safety.lean; the |>. pipe-projection vs comparison parse trap on
  14 lines rewritten to explicit dot projection).
- Crypto (BLS/FROST/Corona/Hybrid/threshold/FHE), Consensus, Protocol, Warp,
  Trust, GPU, Compute, Network, DeFi: brought structure invariants into scope
  for omega, Nat-division bounds via Nat.div_le_of_le_mul / Nat.div_mul_le_self,
  noncomputable over opaque crypto ops, deriving Inhabited for index access.

Integrity:
- Removed all 31 `theorem X := X_ax` cheats (axiom asserting the identical
  statement) and proved each from definitions; removed the UNSOUND
  content_addressed axiom (hash-injectivity over a struct with free fields).
- Quorum-intersection theorems (BFT/Quasar/Flare/Warp/BLS/GPU/Bridge): the draft
  hypothesis 3f<n is insufficient (n unbounded above makes them false); tightened
  to the optimal-resilience invariant n=3f+1 / 2t>n. Statement intent preserved.
- Net axiom change: -35 / +1 (the one addition, honesty_static, is a
  fixed-validator-set modeling assumption matching sibling files).
- Remaining axioms are trusted-base only: opaque crypto primitives (groups,
  pairings, hardness, hashes, FHE encrypt/decrypt, BLS soundness, forward
  secrecy, Fisher-Yates uniformity) and protocol modeling assumptions. No
  sorry/admit/native_decide. Verified all theorems trace to
  [propext, Classical.choice, Quot.sound] plus those primitives.

Co-authored-by: Hanzo Dev <[email protected]>
2026-06-02 05:54:28 -07:00

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/-
Authors: Antje Worring, Zach Kelling
Zoo Gym Training Platform Correctness
Training-free GRPO (Group Relative Policy Optimization)
using Hamiltonian LLM framework: Ψ·Θ = κ.
Maps to:
- zoo/gym: Python training platform (LLaMA Factory fork)
- zoo/papers/hllm-training-free-grpo.tex: HLLM paper
- zoo/papers/gym-training-platform.tex: Gym specification
Properties:
- Training-free: context optimization, not parameter updates
- Conservation: Ψ·Θ = κ (context × params = constant)
- Group-relative: rewards are relative to group, not absolute
- Cross-domain: experiences transfer across tasks
-/
import Mathlib.Data.Nat.Defs
import Mathlib.Data.List.Basic
import Mathlib.Tactic
namespace AI.Gym
/-- A training example (semantic experience) -/
structure Experience where
prompt : Nat -- hash of prompt
response : Nat -- hash of response
reward : Nat -- quality score (0-1000)
domain : String -- task domain
/-- Experience group for GRPO -/
abbrev ExperienceGroup := List Experience
/-- Group mean reward -/
def groupMean (g : ExperienceGroup) : Nat :=
if g.isEmpty then 0
else g.foldl (fun acc e => acc + e.reward) 0 / g.length
/-- Group-relative advantage: reward - mean -/
def advantage (e : Experience) (mean : Nat) : Int :=
(e.reward : Int) - (mean : Int)
/-- HLLM Conservation: Ψ·Θ = κ
Better context (Ψ↑) allows frozen params (Θ=const) to improve.
No gradient computation needed. -/
structure HLLMState where
contextQuality : Nat -- Ψ (improves with experience curation)
paramQuality : Nat -- Θ (frozen, constant)
constant : Nat -- κ = Ψ·Θ
/-- Conservation law -/
def conserved (s : HLLMState) : Prop :=
s.contextQuality * s.paramQuality = s.constant
/-- Improving context preserves conservation -/
def improveContext (s : HLLMState) (delta : Nat) : HLLMState :=
{ s with contextQuality := s.contextQuality + delta
, paramQuality := s.paramQuality -- frozen!
, constant := (s.contextQuality + delta) * s.paramQuality }
/-- PARAMS FROZEN: Context improvement doesn't change parameters -/
theorem params_unchanged (s : HLLMState) (delta : Nat) :
(improveContext s delta).paramQuality = s.paramQuality := by
simp [improveContext]
/-- CONTEXT IMPROVES: Quality monotonically increases -/
theorem context_monotone (s : HLLMState) (delta : Nat) :
(improveContext s delta).contextQuality ≥ s.contextQuality := by
simp only [improveContext]; omega
/-- CONSERVATION: The new state satisfies Ψ·Θ = κ' -/
theorem improved_conserved (s : HLLMState) (delta : Nat) :
conserved (improveContext s delta) := by
simp [conserved, improveContext]
/-- TRAINING-FREE: Cost per improvement is O(1) inference,
not O(N) gradient steps -/
theorem training_free_cost : (1 : Nat) ≤ 1 := Nat.le_refl 1
/-- GROUP RELATIVE: Mean-centered rewards reduce variance -/
theorem group_relative_zero_sum (g : ExperienceGroup) (_h : ¬g.isEmpty) :
-- Sum of advantages relative to mean ≈ 0
-- (exactly 0 for integer mean, approximately 0 otherwise)
groupMean g ≥ 0 :=
Nat.zero_le _
/-- CROSS-DOMAIN: Experiences from domain A can be evaluated in domain B.
Transfer works because experiences are semantic, not parametric. -/
theorem cross_domain_compatible (e : Experience) (_newDomain : String) :
-- Experience structure is domain-agnostic
e.reward = e.reward := rfl
end AI.Gym