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board, dr-math: D-DRMC-5 already certifies associativity; correct two stale claims - #1738

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Oct 23, 2026
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Fixes a false claim that reached main with #1736.

Commit 6ad966d1 says "no certificate exists for DR64". That is not true. relcomp::certify_reassociation (D-DRMC-5, commits a554da1 and 903e664) certifies the reassociation of a Boolean relation-composition chain end to end:

  • the chain is typed;
  • the law is admitted only for two-valued Distinct relations;
  • egglog proves the reassociation and checks its own proof, and refuses commutation;
  • the lowering round-trips;
  • the issued RecipeCertificate is bound to the lowering_digest.

I re-ran the crate on 2026-10-23: 37 tests green, 12 of them in relcomp. NoCertifiedCompiler is returned only by the single-operand admit_recipe path.

Changes

  • .claude/board/entries/2026-10-23-coresearch-thought-git-markov.md: strike the stale line, state what D-DRMC-5 covers, and list what is still open:
    • choosing an association order;
    • rebinding a certificate to another frame (X8);
    • wiring into R2IL/Quack;
    • referencing a certificate from a thought-git squash.
  • crates/dr-math-binding-probe/RECIPE_ADMISSION.md: the same stale sentence, scoped to the single-operand path.

Docs only; no code changes.


Generated by Claude Code

… stale claims

6ad966d said no DR64 certificate exists. relcomp::certify_reassociation
(D-DRMC-5) certifies reassociation of a Boolean composition chain with an
egglog-checked proof and a digest-bound lowering; re-run green (12 relcomp
tests). NoCertifiedCompiler is the single-operand admit_recipe path only.
RECIPE_ADMISSION.md carried the same stale sentence.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VncKoyG6JkpsoqhqTGTv3f
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AdaWorldAPI marked this pull request as ready for review October 23, 2026 10:28
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@AdaWorldAPI
AdaWorldAPI merged commit 05b3516 into main Oct 23, 2026
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AdaWorldAPI pushed a commit that referenced this pull request Oct 23, 2026
… file attribution

Catch-up entries from the merge commits; hygiene-only PRs (#1727, #1728,
#1730, #1732-#1735) get none. #1738 is a correction and gets one.
D-TGA-5's row named src/squash.rs under #1736; #1736 added only
tests/squash_gate.rs, and the gate moved to src/squash.rs in #1739.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VncKoyG6JkpsoqhqTGTv3f
AdaWorldAPI pushed a commit that referenced this pull request Oct 23, 2026
…ents

recipe.rs and tests/contract_handoff.rs said no certified-compiler boundary
exists for DR64 laws. The single-operand admit_recipe path still has no
certifier, but relcomp::certify_reassociation (#1707) certifies one law:
associativity of Boolean-Distinct composition over a DR64 chain. #1738
corrected two other sites; these two remained. Comments only.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01G22yT6htkcdyXsihxxXdrg
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