Structural Centering in the Qur'an: A Corpus-Wide Analysis of Pivot Positioning Across 114 Surahs

This study presents the first corpus-wide quantitative survey of structural centering in the Qur'an. A pivot registry covering all 114 surahs (6,236 verses) was compiled by identifying the principal structural turning point in each surah. Positional offset—the normalized distance between each pivot’s midpoint and the surah’s geometric center—was computed for every entry. The resulting distribution is dramatically concentrated near zero: the mean absolute offset is 0.066 (median 0.039), compared with an expected value of 0.25 under a uniform null model (Z = −13.58, p < 10⁻⁴⁰). At the tightest threshold (≤0.01), 21.1% of surahs qualify versus 2.0% expected—a 10.5× enrichment. The pattern intensifies with surah length: surahs of 150 or more verses show a mean absolute offset of just 0.009. Six structural categories describe how pivots occupy the center, with compound seam (a multi-verse transitional zone) accounting for 56% of the corpus. These results establish that structural centering is a pervasive, quantifiable architectural property of the Qur'anic text. This paper therefore shifts the study of Qur'anic structure from individual literary analyses to a corpuslevel quantitative investigation.