| Symbol | Specification | Kind | Type |
|---|---|---|---|
| . + . | nat-basic2 | f | nat × nat → nat |
| . ++ . | infset-basic | f | set × elem → set |
| . +1 | nat-basic1 | f | nat → nat |
| . - . | nat | f | nat × nat → nat |
| . -1 | nat-basic1 | f | nat → nat |
| . < . | nat-basic1 | p | nat × nat |
| . > . | nat | p | nat × nat |
| . ∈ . | infset-basic | p | elem × set |
| . ≤ . | nat | p | nat × nat |
| . ≥ . | nat | p | nat × nat |
| . ⊆ . | infset-basic | p | set × set |
| ∅ | infset-basic | c | set |
| a | elem | v | elem |
| b | elem | v | elem |
| c | elem | v | elem |
| elem | elem | s | |
| m | nat-basic1 | v | nat |
| n | nat-basic1 | v | nat |
| n0 | nat-basic1 | v | nat |
| n1 | nat-basic1 | v | nat |
| nat | nat-basic1 | s | |
| s | infset-basic | v | set |
| s0 | infset-basic | v | set |
| s1 | infset-basic | v | set |
| s2 | infset-basic | v | set |
| set | infset-basic | s |