Resolution: Killed
Caveats: ROBUSTLY KILLED. Ibn al-Jawzi's within-author self-reuse density sits at the MEDIAN of the 53 most prolific OpenITI authors (rank 24 of 53), not the >=3x outlier the conjecture staked -- he recombines his own books at about the rate his prolific peers do, not at a density 'ordinary prolific authors never approach'. The character-based density proxy (used to avoid re-fetching ~1,900 texts) was validated against an exact word-based computation for Ibn al-Jawzi himself: 1.10 vs 0.85, both an order of magnitude below the 3x threshold, so the approximation is immaterial. The one real judgement call -- constructing the >=20-works population (excluding grab-bag catalogue codes and translator-buckets whose 'works' are unrelated foreign originals) -- does not move the verdict (a classical-era-only median gives 0.89, still killed). The pietist-ledger picture is not borne out in the reuse data.
Registered against the KITAB project's openly released pairwise text-reuse data over OpenITI (kitab-project.org; github.com/OpenITI). Claim under test (primary clause): Ibn al-Jawzi's within-author self-reuse density is AT LEAST THREE TIMES the median within-author density of all OpenITI authors with >= 20 distinct works.
Resolution criteria: SHARED CONVENTIONS (identical across all rows of this packet). (a) TEXT SELECTION: use the PRIMARY OpenITI version of each named work (the '-ara1' primary per OpenITI convention, or the single most-complete version if no primary is flagged); if a work is split across several OpenITI version files, concatenate all parts of that same work's primary version in order. The build must FREEZE the exact OpenITI version URI(s) + a sha256 per work in a freeze_manifest before any metric is computed. (b) CLEANING: strip OpenITI mARkdown structural material (header block; lines/markers beginning with '#', '~~', page markers like 'PageVNN_NNN', 'ms', milestone markers 'Milestone###', editorial '@'-tags) to leave the running body text; strip Arabic tashkil (U+064B-U+0652, U+0670, U+0640 tatweel). (c) WORD = one whitespace-delimited token of the cleaned body text. (d) MARKER MATCHING is done on the tashkil-stripped text; alif/hamza variants are normalized for marker matching only (alif-forms أ إ آ ا -> ا) NOT for word counting. (e) All raw counts, rates, and the cleaned word totals per work must be reported alongside the verdict. (f) computed_at must postdate registered_at. || POPULATION: all OpenITI authors carrying >= 20 distinct works for which KITAB pairwise reuse alignments exist. WITHIN-AUTHOR DENSITY D(author) = (total aligned-passage words across all unordered within-author work-pairs) / (sum over those pairs of the word-length of the SMALLER work in the pair). [This normalizes shared material by the maximum that COULD be shared.] PRIMARY STATISTIC = D(Ibn al-Jawzi) vs MEDIAN of D over all qualifying authors. CLAUSE PRECEDENCE: (1) INCONCLUSIVE_BY_DESIGN if Ibn al-Jawzi has < 20 distinct works in the KITAB/OpenITI data, OR fewer than 15 OTHER authors qualify (>=20 works) for a stable median, OR KITAB reuse coverage of Ibn al-Jawzi's works is absent. (2) SUPPORTED if D(Ibn al-Jawzi) >= 3 x median(D). (3) KILLED if < 3x. Report D(Ibn al-Jawzi), the median, the qualifying-author count, and Ibn al-Jawzi's rank within the distribution.
Known priors disclosure: Held: the conjecture's reasoning (Ibn al-Jawzi maximized sanctified page-count by recombining his own earlier books) and general knowledge that KITAB publishes pairwise passim reuse over OpenITI and that Ibn al-Jawzi is among the most prolific OpenITI authors. NOT computed: his self-reuse density, the cross-author median, or his rank. Threefold-versus-median threshold is the conjecture's own.
KITAB one_to_all pairwise text-reuse data (kitab-project-org, versioned 2025.1.9) over OpenITI, pinned to the same commit as the Tier-1 build; per-passage source/target character offsets anchored to OpenITI's native ~300-word msNNNN milestone tags. Sonnet computed (symmetrized-dataset dedup + milestone-offset resolution independently validated in-build via 12 coherent samples). Fable independently re-derived the Ihya' quarter distribution from scratch (own milestone->quarter mapping) as a pipeline check. computed_at postdates registered_at (rule 6). Primary D is character-based (OpenITI char_length fields, no extra fetch); validated against an exact word-based D for Ibn al-Jawzi himself.
Dataset: KITAB within-author reuse density D for every OpenITI author with >=20 works (53 qualifying authors after excluding blank-author/grab-bag catalogue codes), normalized over ALL C(k,2) work-pairs (the registration's 'maximum that could be shared'). D(Ibn al-Jawzi) vs the population median.
computed 2026-07-17