Summary: The bāhiramātikā is the fifth and largest matrix in the Dhātukathā. It imports the comprehensive triad and dyad grids from the Dhammasaṅgaṇī to serve as subjects for the relational analysis of inclusion (saṅgaha) and association (sampayoga). (Dhk 1.5)
Canonical locus
The Dhātukathā introduces this matrix as the final structural list before beginning the detailed analysis chapters. (Dhk 1.5)
Dhk 1.5 (dt1.5:0.3)
5. Bāhiramātikā
Analysis
The external matrix effectively connects the relational system of the Dhātukathā to the entire doctrinal range of the Abhidhamma: (Dhk 1.5)
- Triad Grid (tika-mātikā): The twenty-two sets of three categories.
- Dyad Grid (duka-mātikā): The one hundred sets of two categories.
By importing these "external" lists (external to the primary aggregate/base/element schema), the Dhātukathā demonstrates that its relational logic can be applied to every phenomenon defined in the Abhidhamma. (Dhk 1.5)
Textual notes
- The bāhiramātikā represents the Abhidhamma's drive toward exhaustive mapping; it ensures no category from the Dhammasaṅgaṇī is left out of the relational network.
- Unlike the abbhantaramātikā, which focuses on the "person-structure", this matrix focuses on the "dhamma-structure" of reality.