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SC-28: generalizations stated without their assumptions (recurrence, stationary distribution, type II / dS, C2 scope) - #962

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Source-correction unit SC-28 of the #942 audit (gate #946). Base: main 0d917665. Head: c43347f4.

Review history:

Commit What it is Review verdict
42bc4050 First draft ACCEPT WITH CHANGES (R1–R4, optionals 1–8)
df061d64 Applies R1–R4, the optionals, and owner decisions 2, 6a and 6b Confirmation: ACCEPT WITH CHANGES (Q1–Q3)
c43347f4 Applies Q1–Q3 Confirmation pending

Sites

Site Was Now
Main :151 Near-total Poincaré return for general Hamiltonian flows gives continuous-time P-indivisibility Near-total return at a common time would give it, as the counterpart of Γ_L = I. Poincaré recurrence does not supply that return: for a mixing flow T_ii(t) → μ(cell) < 1. The general case is open
Main :176 The §3.4 necessity proof for (C2) "establishes" P-divisibility in the weak-coupling and fast-bath regimes The recurrence theorem uses no form of (C2). The §3.4 theorem bounds conditional memory under mixing (ε ≤ 1 − 1/n_V), not P-divisibility
Main §4.4 :706, GR §6.3 :368, ch07 :199, FULL Type II structure "as a consequence"; dS cancellation "structurally forced"; entropy "pinned to" log|G_sub|; evidential self-assessment Each finite region carries the full matrix algebra, and the infinite-region completion is a quasilocal C*-algebra with no state or representation selected [GR §3.3]. No von Neumann closure, no relation to CLPW's observer-dressed algebra, and no identification of CLPW's entropy with a substratum quantity is derived. Whether the construction reproduces CLPW's algebra and its entropy is open (owner decision 2). The GR horizon entropy is σ per boundary mode over the N_modes of §5. The self-assessment is removed. The GR §6 heading is kept, per a documented decision
SM :1211, gap (ii) Part A "by P-indivisibility (Main Theorem 4), the stationary distribution is unique" Invariant distributions of a finite bijection are exactly those constant on cycles. Part A uses TφT = φ⁻¹, which holds for every update (a,b) ↦ (R(a) − b, a), and is conditional on cycle ergodicity of the realized bijection on a T-invariant set carrying ρ. The whole of gap (ii) carries gap (i)'s cycle-ergodicity residual (owner decision 6b)
SM :294 "empirically demonstrated", "closed at chat-track numerical scale" Chaos of the rounded map is demonstrated numerically, within the sampled sizes, ensembles and protocols. Breaking the linear rule's integrability is necessary for full-shell sampling. Chaos does not establish it, and no single-cycle theorem exists (owner decision 6a)
Structure :1115 "chat-track scope" "the scope of this section"
ch18 §18.7 :174, :180, :191, :193; ch09 :106; ch02 :32; ch01 :119; FULL "Poincaré recurrence", read as the finite-bijection statement; "finite-measure"; "the cycle including every configuration" Exact recurrence of a finite bijection (φ^N = id gives Γ_N = I), distinguished from Poincaré's theorem. The linear rule fixes the zero configuration, so no single cycle covers S
SM §8.5 :1456; Explainer :679 Self-assessment of convergence Removed

Kept as is, with reasons:

  • Main :532: "Poincaré recurrence time" is accurate for finite substrates. It is a canonical statement, so its fingerprint stays unchanged.
  • The CLPW, Maldacena and HUZ descriptions of external work.
  • "structurally forced" at Structure :1059 and :1073 and SM :1241: these are different claims.

Introduction dependency: none. #918 cites only the finite bijection's recurrence, and GR §6.3 only for the dimensional identity.

Stacked work: SC-31 (corpus/sc31-period-growth) is built on this branch.

Checks (local, at c43347f4):

  • Release gate: every step passes except lean-axioms, which runs in CI.
  • edge_rigidity_probe: all checks pass.
  • Mirror: chapters and FULL agree.
  • Added-lines and secrets scans: 0 hits.

Merge: after #918, by owner decision, and only at an exact SHA the owner approves.

Links: #942, #946.


Generated by Claude Code

Main §2.3, continuous-time extension: P-indivisibility now follows from a
stated hypothesis, near-total return at a common time. That return is the
counterpart of Γ_L = I for a bijection of finite order. Poincaré recurrence
does not supply it, since a mixing flow has T_ii(t) → μ(cell) < 1, so the
general-flow case is open. Main :174 now says "finite-recurrence argument".

Main §2.3, fast-bath remark: the JC and Davies–Merkli examples lie outside
the finite-recurrence hypothesis, and (C2) is not necessary for
recurrence-cycle P-indivisibility. The §3.4 theorem bounds conditional
memory under the mixing hypothesis, not P-divisibility.

Main §4.4 and GR §6.3: no type II algebra, no entropy identification
(G_sub is undefined in the corpus), and no dS phase computation are
derived. Reproducing the cancellation is open. The HUZ dimension is a
finite partition count, and the AAIL scaling is not derived. The
evidential self-assessment is removed. The GR §6 heading is kept per the
documented decision at 9ff2771.

SM §7.5 gap (ii) Part A: uniqueness of the φ-invariant distribution needs
a single cycle, and P-indivisibility does not give it. ρ∘T = ρ is now
conditional on the cycle ergodicity of gap (i). The nonexistent "Main
Theorem 4" citation is dropped. Bridge (c) now says "a stationary
distribution".

Mirrors corrected: SM §8.5 and the Explainer FAQ (self-assessment), and
book ch01 §1.5, ch07 §7.7 and ch18 §18.7, each with its FULL.md copy.
Regenerated Main, GR, SM, Explainer and the book.

Checks: the release gate passes except lean-axioms, which has no lake
toolchain locally. edge_rigidity_probe passes. The added-lines register
scan has 0 hits.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Y87wExth9RoUb3dtbumhTb
…ecurrence terms

Owner decisions and the ACCEPT WITH CHANGES review of 42bc405.

- Main §4.4, GR §6.3, ch07 §7.7 (+FULL), R1: the finite-dimensional
  statement is scoped to each finite region. The quasilocal
  C*-completion (GR §3.3) is cited, with no state or representation
  selected. No von Neumann closure, relation to CLPW or entropy
  identification is derived. Whether the construction reproduces CLPW's
  algebra and its entropy is open.
- GR §6.3, R2: the horizon entropy is σ per boundary mode over the
  N_modes of §5. It recovers S_dS under the §3 calibration.
- SM §7.5 gap (ii), (6b) and R4: the whole gap is labelled conditional
  on cycle ergodicity. The φ-invariance of ρ∘T is unconditional. The
  form E(a,b) = a·a + b·b − a·Nb of the §4.2 rule is conserved and even
  under T, so its level sets are φ- and T-invariant. Both parts carry
  gap (i)'s residual. Dropped "does not bear on this".
- SM §4.2 :294, (6a): the diagnostics show chaos numerically, within the
  sizes, ensembles and protocols sampled. No single-cycle theorem is
  established. "chat-track" is removed there and at Structure :1115.
- Main :176: the theorem uses no form of (C2), and (C2-structural) holds
  by reversibility. Adds the range condition ε ≤ 1 − 1/n_V.
- Main :706: Slagle-Preskill comparison narrowed to the proved
  equivalence. The continuous-time law is additional structure, and
  operational QM needs the quantum-complete extension.
- ch18 §18.7 (+FULL): the route needs Γ_n = I. The SM §4.2 rule fixes
  the zero configuration, so no single cycle covers S. Exact
  finite-bijection recurrence is now named "finite recurrence" or "exact
  recurrence" at ch18 :174 and :193, ch09 :106 and ch02 :32.
- Record: corrected the G_sub reason, the survivor counts and the
  provenance of the heading decision.

Rebuilt Main, GR, SM, Structure and the book. Release gate: every step
passes except lean-axioms (no lake locally). edge_rigidity_probe passes.
The added-lines register scan and the secrets scan are clean.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Y87wExth9RoUb3dtbumhTb
…e, integrability

- SM §7.5 gap (ii) Part A (Q1): dropped the E-level-set derivation. The
  integrable linear rule conserves a whole family of E_p, so its level
  sets are not single cycles. TφT = φ⁻¹ is now credited to the update
  form (a,b) ↦ (R(a) − b, a) with T(a,b) = (b,a), which holds for every
  R. T maps cycles to cycles, and ρ uniform on a cycle C has ρ∘T = ρ
  exactly when T(C) = C. Part A's label, the bold heading and the
  closing sentence now read "cycle ergodicity of the realized bijection
  on a T-invariant set carrying ρ".
- Main §4.4, GR §6.3, ch07 §7.7 (+FULL) (Q2): the disclaimer is scoped
  to "no identification of CLPW's entropy with a substratum quantity".
- SM §4.2 :294 (Q3): "Breaking the integrability of the linear rule is
  necessary for full-shell sampling; chaos does not establish
  full-shell sampling".
- Main :706 (optional): "exact finite operational quantum mechanics".
- Record rows updated to match.

Rebuilt Main, GR, SM and the book. Release gate: every step passes
except lean-axioms (no lake locally). edge_rigidity_probe passes. The
register, secrets and model-id scans are clean.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Y87wExth9RoUb3dtbumhTb
…requirement

Two phrases in the :294 paragraph still made chaos the requirement for
full-shell sampling, against the sentence below them. Way out (i) now
reads "breaking the linear rule's integrability, which full-shell
sampling needs". The closing sentence now reads that the chaos "shows
that the rounding breaks the linear rule's integrability as the
ergodicity interpretation requires". Rebuilt SM. Release gate: every
step passes except lean-axioms (no lake locally). The register and
secrets scans are clean.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Y87wExth9RoUb3dtbumhTb
…haos (SM :294) (#946)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Y87wExth9RoUb3dtbumhTb

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Closing without merge: fully absorbed into main. The owner approved this closure in the Workstream D survival audit, checked against main c596904a.

All 9 SC-28 corrections are on main, several in later or tighter wording:

  • Continuous-time recurrence: Main:151, ch01:119, FULL:463.
  • Poincaré → exact finite recurrence: Main:174, ch02:32, ch09:106, ch18:174/180/200.
  • lcm and ≥2 cycles: ch18:198.
  • CLPW/Maldacena/HUZ: GR:368, Main:706, ch07:199, Explainer:679, SM:1472.
  • Fast bath: Main:176.
  • Chaos and non-integrability: SM:294.
  • Gap (ii): SM:1227.
  • Chirality: SM:1239.

The branch and history are kept.


Generated by Claude Code

@amaybaum amaybaum closed this Oct 31, 2026
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