refactor: remove 97 dead decoration lemmas + 2 unused imports (2026-07-17 tier2 cycle) - #4536
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Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
…n lemmas Pure removal of unreferenced theorems flagged by the tier-2 dead-decl audit (finding H1). All 97 are plain theorems with no attributes and no surviving referrers (78 leaf ref-0 + 16 cascade-dead + 3 unused '_apply' unfold aliases). - PseudoMass/FromParamsBounds/Intervals.lean: whole file dead -> deleted, and its sole import dropped from PseudoMass/FromParamsBounds.lean (21 lemmas). - AmbientLattice/TruncatedFunctions/TwoPoint.lean: 14 truncated2Infinite_* bounds. - AmbientLattice/CorrelationInfinite/Bounds.lean: 13 correlationInfinite_* bounds. - PseudoMass/Ext.lean: 31 pseudoMassExt_*/neg_pseudoMassExt_* lemmas. - PseudoMass/Basic.lean: 15 pseudoMass_* lemmas. - Removed 3 unused unfold aliases: susceptibilityAlongExhaustion_apply, susceptibilityInfinite_apply, spontaneousMagnetization_apply. No mathematical content lost: every KEPT lemma still builds; no survivor proof edits needed. Build green (zero warnings), GKSTest passes, zero sorry. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Import hygiene (tier-2 audit finding M2): CycleGraphLink no longer needs the full `import Mathlib.Tactic` umbrella; the tactics it uses are provided by the existing SimpleGraph.Circulant/.Finite imports. The sibling WalkSum candidate (Mathlib.Tactic.Positivity) was checked and REVERTED -- positivity is genuinely used there. Build green (zero warnings), GKSTest passes. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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* chore(issues): close-out mirror sync for #4535 refactor cycle Merged PR #4536 (commit 1793e54): 97 dead decoration lemmas + 1 unused import removed. Issue auto-closed. Mirror updates: #4535.md CLOSED completed status, INDEX.md row updated with merged commit + deferred items noted. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> * chore(issues): add #4535 status table row to INDEX.md Add missing table row for #4535 refactor cycle in established format: state CLOSED completed (2026-07-17), role and PR merge commit noted. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> * chore(issues): correct M2 wording in #4535 narrative — safe not unsafe Fix parenthetical: 1 safe import removal (1/2 candidates; unsafe WalkSum candidate rejected). CycleGraphLink removal was safe; WalkSum was rejected as unsafe false positive. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> --------- Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
This was referenced Jul 17, 2026
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Delete twelve dead pseudoMassG decoration lemmas from IsingModel/PseudoMass/Profile.lean (745 → 610 lines, deletions only). This completes on the pseudoMassG layer the sweep PR #4536 already did on pseudoMassExt. An independent audit narrowed the original 22 reference-0 candidates to 12: seven are load-bearing inside the file and three are cited by docs/index.md as GJ §17.5 results, so those ten are kept. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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Summary
Refactoring cycle (user-authorized 2026-07-17): removes 94 dead decoration-lemma decls + optional 3
_applyaliases (H1 scope), and 2 pinned unused mathlib imports (M2 pinned scope) from tier2 audit findings.IsingModel/PseudoMass/FromParamsBounds/Intervals.lean(21 decls)TransferMatrix/CycleGraphLink.lean(removeMathlib.Tactic),Inequalities/WalkSum.lean(removeMathlib.Tactic.Positivity)Deferred: H2 gate (user approval pending), M1 file splits, mathlib fine-grained imports,
_symm_applyattr review.Test plan
lake build— zero warningsgrep -rn "sorry|admit|native_decide" IsingModel/= 0lake exe GKSTestgreen#print axiomsspot-check (Simon-Lieb capstones)Closes #4535
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