| m0=: ] i."1&.|: 1 _1"_ | Column node table from connection table columns (inverse to m3) |
| m1=: ] (i."1) 1 _1"_ | Node table from connection table rows (inverse to m4) |
| m2=: [:-/ ] =/ [:i. [:>: [:>./ , | Row connection table from node table columns |
| m3=: [: |: m2 | Column connection table from node table columns (inverse to m0) |
| m4=: [:-/"2 ] =/ [:i. [:>: [:>./ , | Row connection table from node table rows (inverse to m1) |
y 1 1 0 0 0 0 _1 0 1 1 _1 0 1 _1 0 0 0 _1 0 _1 m0 y 0 0 2 1 1 2 1 3 2 3 m3 m0 y 1 1 0 0 0 0 _1 0 1 1 _1 0 1 _1 0 0 0 _1 0 _1