| Symbol | Specification | Kind | Type |
|---|---|---|---|
| . + . | nat-basic | f | Nat × Nat → Nat |
| . +1 | nat-basic | f | Nat → Nat |
| . -1 | nat-basic | pf | Nat → Nat with λ n. n ≠ 0 |
| . < . | nat-basic | p | Nat × Nat |
| . ≪ . | wellfounded | p | Elem × Elem |
| A | wellfounded-TL | v | Elem,flexible |
| Elem | wellfounded | s | |
| N | wellfounded-TL | v | Nat,flexible |
| Nat | nat-basic | s | |
| a | wellfounded-TL | v | Elem |