| 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 |
| . .ec | aecheader | pf | aecheader → nat with λ aehdr. aehdr.valid? |
| . .ec:= . | aecheader | pf | aecheader × nat → aecheader with λ aehdr, m. aehdr.valid? |
| . .valid? | aecheader | p | aecheader |
| . < . | nat-basic | p | nat × nat |
| . > . | nat | p | nat × nat |
| . ≤ . | nat | p | nat × nat |
| . ≥ . | nat | p | nat × nat |
| aechdr | aecheader | f | nat → aecheader |
| aecheader | aecheader | s | |
| aehdr | aecheader | v | aecheader |
| aehdr0 | aecheader | v | aecheader |
| aehdr1 | aecheader | v | aecheader |
| empty | aecheader | c | aecheader |
| garbage | aecheader | c | aecheader |
| m | nat-basic | v | nat |
| m0 | aecheader | v | nat |
| n | nat-basic | v | nat |
| n0 | nat-basic | v | nat |
| n1 | nat-basic | v | nat |
| nat | nat-basic | s |