| Symbol | Specification | Kind | Type |
|---|---|---|---|
| # . | natlist | f | natlist → nat |
| . ' | natlist | f | nat → natlist |
| . + . | nat-basic | f | nat × nat → nat |
| . + . | natlist | f | nat × natlist → natlist |
| . + . | natlist | f | natlist × natlist → natlist |
| . + . | natlist | f | natlist × nat → natlist |
| . ++ . | natlist | f | natlist × nat → natlist |
| . +1 | nat-basic | f | nat → nat |
| . +2 . | natlist | f | nat × nat → natlist |
| . - . | nat | pf | nat × nat → nat with λ n, m. n ≥ m |
| . -1 | nat-basic | pf | nat → nat with λ n. n ≠ 0 |
| . .butlast | natlist | pf | natlist → natlist with λ x. x ≠ [] |
| . .head | natlist | pf | natlist → nat with λ x. x ≠ [] |
| . .last | natlist | pf | natlist → nat with λ x. x ≠ [] |
| . .tail | natlist | pf | natlist → natlist with λ x. x ≠ [] |
| . < . | nat-basic | p | nat × nat |
| . < . | natlist | p | natlist × natlist |
| . > . | nat | p | nat × nat |
| . ∈ . | natlist | p | nat × natlist |
| . ≤ . | nat | p | nat × nat |
| . ≥ . | nat | p | nat × nat |
| . ⊑ . | natlist | p | natlist × natlist |
| . ⊒ . | natlist | p | natlist × natlist |
| [] | natlist | c | natlist |
| butlastn | natlist | pf | nat × natlist → natlist with λ n, x. n ≤ # x |
| disj | natlist | p | natlist × natlist |
| dups | natlist | p | natlist |
| fillfirst | natlist | f | nat × nat × natlist → natlist |
| mklist | natlist | f | nat × nat → natlist |
| nat | nat-basic | s | |
| natlist | natlist | s | |
| rev | natlist | f | natlist → natlist |
| rmdup | natlist | f | natlist → natlist |