| Symbol | Specification | Kind | Type |
|---|---|---|---|
| # . | list-data | f | List → Nat |
| . + . | nat-basic | f | Nat × Nat → Nat |
| . + . | list-data | f | Elem × List → List |
| . +1 | nat-basic | f | Nat → Nat |
| . - . | nat | pf | Nat × Nat → Nat with λ n, m. n ≥ m |
| . -1 | nat-basic | pf | Nat → Nat with λ n. n ≠ 0 |
| . .head | list-data | pf | List → Elem with λ x. x ≠ [] |
| . .tail | list-data | pf | List → List with λ x. x ≠ [] |
| . < . | nat-basic | p | Nat × Nat |
| . < . | list-data | p | List × List |
| . > . | nat | p | Nat × Nat |
| . ≤ . | nat | p | Nat × Nat |
| . ≥ . | nat | p | Nat × Nat |
| [] | list-data | c | List |
| Elem | elem | s | |
| List | list-data | s | |
| Nat | nat-basic | s | |
| a | list-data | v | Elem |
| head | list-data | v | Elem |
| n | list-data | v | Nat |
| tail | list-data | v | List |
| x | list-data | v | List |
| y | list-data | v | List |
| z | list-data | v | List |