Concepts × Canon Divisions

Traditional panjiao treats Prajñā (emptiness) and Yogācāra as the two wings of the Mahāyāna. Measured against the corpus, the two wings behave in completely asymmetric ways.

Emptiness-family concepts are the canon's lingua franca: 空 emptiness appears in 20 of 21 divisions (distribution entropy 0.80), 般若 prajñā in all 21 (0.80), 因缘 hetu-pratyaya in 20 (0.85). Ten core emptiness-family concepts average entropy 0.68 — the closest thing to a uniform distribution in the whole matrix.

Yogācāra terms barely leave home: 转依 āśraya-parāvṛtti occurs in just 2 divisions (entropy 0.05), 遍计所执性 in 5 (0.15), 藏识 ālaya in 10 (0.32). Eight core Yogācāra concepts average entropy 0.22 — the strongest “dialect zone” in the corpus.

The sharpest cut comes from the Chan records: emptiness-family concepts have 127 core links in the Recorded Sayings division; Yogācāra concepts have 11. That Chan speaks Madhyamaka rather than Yogācāra is now visible at chunk-level statistical resolution.

This ranks no school above another. Panjiao classifies by doctrinal register; the corpus stratifies by linguistic diffusion. That emptiness became the canon's common tongue fits its traditional self-description as the “shared dharma”; Yogācāra's self-containment fits its character as a precision scholastic system. What the machine view adds is that both characters can now be measured.