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docs(decisions): lexicon v2 + hub-and-probe identity arbitration ADR, with the false-friend census script - #443
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…R, with the false-friend census Propose the next step past per-prover synonyms: a lexicon schema that can record false friends, phrases, specialisations and equivalences with a witness, and an identity-arbitration architecture (λΠ hub for `sound`, consequence-partition probes for `epi`) that maps onto the two ECH-05 fidelity constructors without arbiter or ABI changes. Add scripts/false_friend_scan.sh, a deterministic jq + coreutils census over training_data/proof_states_*.jsonl. On the owner's first stage-6a pair (HOL4 ↔ HOL Light) it finds 5,060 shared theorem names, 1,030 cognate statements and 10,460 differing statement pairs, most of them type generalisations rather than synonyms or contradictions; the within-prover census shows a name is not an identity even inside one corpus. Status: proposed. Owner decisions D1–D5 are listed in the ADR instead of being asked, because the session was ending. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01WS4mfQeC3N1DWjcCQJaQqw
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The title clearly identifies the ADR, the hub-and-probe identity arbitration proposal, and the false-friend census script. It is specific and related to the main changes. |
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Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 2 functions across 1 files. (1 skipped: 1 … |
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The pull request description follows the required template. It explains the proposal, lists the changes, records testing and limitations, completes the quality checklist, and includes relevant output.… |
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hyperpolymath
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October 19, 2026 22:16
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- 🪄 Fix comments: Fix CodeRabbit comments on this PR
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Review comments at
@docs/decisions/2026-10-19-lexicon-v2-and-identity-arbitration.adoc:
- Line 1: Change the SPDX licence identifier in the file’s header comment from
CC-BY-SA-4.0 to MPL-2.0.
- Around line 209-212: Update the evidence mapping in the ADR: treat curated as
provenance only and map it to FidelityEvidence::None until qualifying probe or
kernel evidence is attached. Specify that probe maps to DeclaredCorrespondence
and kernel maps to KernelTranslation only when all required fields, including
checked_by, are present.
- Around line 51-76: Update the 1,030-pair row in the Experiment 1 table to
describe statements as equal after whitespace normalisation, not byte-identical.
Keep the measured count and the surrounding table unchanged.
Review comments at @scripts/false_friend_scan.sh:
- Line 65: Update the equality checks in the awk report sections around the
summary and differing-pairs logic to compare fields as strings, so
numeric-looking values such as 01 and 1 remain distinct. Apply the string
comparison in both expressions while preserving the existing report behaviour
otherwise.
- Line 41: Update the homonym-count pipeline assigned to h so uniq -d also uses
LC_ALL=C, keeping the comparison byte-ordered regardless of the caller’s locale.
- Around line 70-72: Update the awk command processing "$work/joined.tsv" to
stop after printing eight differing pairs, counting each pair as three output
lines, and remove the downstream head truncation. Preserve the existing
comparison and output format.
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scripts/false_friend_scan.shdocs/decisions/2026-10-19-lexicon-v2-and-identity-arbitration.adoc
…the measured property Review findings on #443 (CodeRabbit), each reproduced before the change: - The final `awk … | head -24` made head close the pipe while awk was still writing; under `set -o pipefail` the finished scan exited 141 (SIGPIPE). awk now stops itself after eight pairs and head is gone. Exit is 0. - `$2 == $3` compared numeric-looking goals numerically (`01` == `1`); both comparisons now force string comparison. - `uniq -d` inherited the caller's locale while `sort` ran under LC_ALL=C; uniq runs under LC_ALL=C too. - The ADR called the 1,030 cognates "byte-identical"; the script compares after whitespace normalisation, so the ADR now says that. - The lexicon v2 `evidence` field: `curated` is provenance only and lifts to `FidelityEvidence::None`; `kernel` needs `checked_by`; only `probe` and a complete `kernel` lift to the arbiter's constructors. The counts are unchanged (95,740/90,170/3,755; 43,937/42,456/1,218; 5,060 shared; 11,490 pairs; 1,030 cognate; 10,460 differing). Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01WS4mfQeC3N1DWjcCQJaQqw
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…rries independence and injectivity Codex review findings on #443: - The extractor admitted rows with an empty theorem name or an empty goal (three in HOL4, twelve in Why3, more in lambda_prolog), which could join as "cognates" with nothing to compare. Rows whose trimmed name or whitespace-normalised goal is empty are now dropped before the TSV is written. The affected census rows move by a few units (HOL4 95,738 / 90,168; AFP, ACL2, Why3, lambda_prolog likewise); the HOL4 ↔ HOL Light overlap and agreement counts are unchanged. - The ADR claimed the exchange renderings fail safe. They do not: the OpenTheory renderer collapses unsupported terms to one opaque constant and drops binder types, so distinct terms can hash alike. The ADR now says so and requires an injective rendering with unsupported terms rejected before any KernelTranslation is built (decision 5, PR 6). - The ADR claimed no arbiter or ABI change was needed, yet asked for probe independence that DeclaredCorrespondence cannot carry and fidelity_level does not check. It now specifies a standpoint record on DeclaredCorrespondence, an Epi lift only when standpoints differ, and the matching Arbitration.idr argument (option B, decision 3, PR 4), and calls the change what it is: additive. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01WS4mfQeC3N1DWjcCQJaQqw
…nto claude/zen-brahmagupta-opqqle # Conflicts: # scripts/false_friend_scan.sh
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Summary
Proposes the step past per-prover synonyms: a lexicon v2 schema that can record false friends, phrases, specialisations and equivalences with a witness, and a hub-and-probe identity-arbitration architecture for roadmap stage 6c (λΠ hub for
sound, consequence-partition probes forepi) that maps onto the two ECH-05FidelityEvidenceconstructors. The fusion mechanisms are untouched; the arbiter and ABI changes it needs are additive (a standpoint record onDeclaredCorrespondenceso correlated probes cannot reachepi, and an injectivity requirement onKernelTranslationrenderings).Status is proposed. The five owner decisions (D1–D5: architecture, lexicon format, first probe pair, whether mined candidates may set
semantic_class, whether to open the verisimdb issue) are listed in the ADR §7 with a recommendation each; nothing is ruled by this PR. Related: #190, #191, #429 (none closed).Changes
docs/decisions/2026-10-19-lexicon-v2-and-identity-arbitration.adoc— the ADR: measured inventory (bridges, arbitration, lexicon coverage, corpus), two experiments, options rated (elegance/correctness, then dependability/security, with aspects), recommendation, proposed decision, stacked-PR work breakdown, cross-repo items, open owner decisions, non-claims.scripts/false_friend_scan.sh— deterministic jq + coreutils census overtraining_data/proof_states_<prover>.jsonlfor one prover pair: within-prover homonym rate, cross-prover name overlap, and cognate vs differing statement counts. Lexical evidence only; it never raises an arbitration level.Measured on the owner's first stage-6a pair, HOL4 ↔ HOL Light: 5,060 shared theorem names; 1,030 statements equal after whitespace normalisation (cognates); 10,460 differing statement pairs, dominated by type generalisation (
realvsreal^N,absvsnorm), i.e. specialisation, a relation the current lexicon cannot express.Review rounds landed on the branch: 38c986f (CodeRabbit: the script exited 141 under
pipefail, string comparison,LC_ALL=Conuniq, measured-property wording, theevidence→FidelityEvidencemapping); 5be5583 (CodeRabbit docstrings, owner-triggered); 4486d2d (Codex: rows with an empty name or statement dropped from the census, the ADR no longer claims the exchange renderings fail safe, and probe independence is carried insideDeclaredCorrespondencerather than beside it). The ADR keepsCC-BY-SA-4.0(prose, per NOTICE).RSR Quality Checklist
Required
cargo check --libgreen on this tree; no Rust touched, so the suite is unchanged)bash -nclean)unsafeblocks without// SAFETY:comments (n/a)believe_me,unsafeCoerce,Obj.magic,Admitted,sorry).envfiles includedAs Applicable
(status)/(maturity)updated — not changed (proposal only)(ecosystem)updated — not changed(meta)and/ordocs/decisions/updated — new ADR, status proposeddocs/status/ROADMAP.adocupdated — deliberately not: stage 6c row changes only once D1 is ruledTOPOLOGY.mdupdated — n/aCHANGELOGor release notes updated — not for a proposed ADRTesting
scripts/false_friend_scan.sh training_data hol4 hol_lightre-run after every change; the current head reproduces 95,738 / 90,168 / 3,755 for HOL4, 43,937 / 42,456 / 1,218 for HOL Light, 5,060 shared names, 11,490 pairs, 1,030 cognate, 10,460 differing, in under a minute, with exit status 0 (it was 141 before 38c986f). The within-prover census table was recomputed with the final extractor. No prover binary was available in the session container, so every number is lexical, as the ADR's non-claims section states.The three red checks on this PR (
T1 Guix manifest check,governance / JS runtimes — environment provisions Bun first,governance / Validate Hypatia Baseline) fail identically onmainat0d0aa0c; the comments below trace each one and the fix that belongs elsewhere.Screenshots
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