| Symbol | Specification | Kind | Type |
|---|---|---|---|
| . + . | nat-basic | f | nat × nat → nat |
| . +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 |
| . < . | nat-basic | p | nat × nat |
| . > . | nat | p | nat × nat |
| . ^* | rtc | f | ('a × 'a → bool) → 'a × 'a → bool |
| . ≤ . | nat | p | nat × nat |
| . ≥ . | nat | p | nat × nat |
| a | rtc | v | 'a |
| b | rtc | v | 'a |
| c | rtc | v | 'a |
| n | rtc | v | nat |
| nat | nat-basic | s | |
| pelem | rtc | v | 'a × 'a → bool |
| rtc | rtc | f | nat × ('a × 'a → bool) → 'a × 'a → bool |