| Symbol | Specification | Kind | Type |
|---|---|---|---|
| . * . | nat-mult | f | nat × nat → nat |
| . + . | nat-basic2 | f | nat × nat → nat |
| . +1 | nat-basic1 | f | nat → nat |
| . - . | nat | f | nat × nat → nat |
| . -1 | nat-basic1 | f | nat → nat |
| . .id | Agent | f | Agent → nat |
| . < . | nat-basic1 | p | nat × nat |
| . > . | nat | p | nat × nat |
| . ≤ . | nat | p | nat × nat |
| . ≥ . | nat | p | nat × nat |
| ag | Agent | v | Agent |
| ag0 | Agent | v | Agent |
| ag1 | Agent | v | Agent |
| Agent | Agent | s | |
| isAirline | Agent | p | Agent |
| isCreditCardCenter | Agent | p | Agent |
| isTravelAgency | Agent | p | Agent |
| isTravelPlanner | Agent | p | Agent |
| isUser | Agent | p | Agent |
| m | nat-basic2 | v | nat |
| m0 | Agent | v | nat |
| mkAirline | Agent | f | nat → Agent |
| mkCreditCardCenter | Agent | f | nat → Agent |
| mkTravelAgency | Agent | f | nat → Agent |
| mkTravelPlanner | Agent | f | nat → Agent |
| mkUser | Agent | f | nat → Agent |
| n | nat-basic1 | v | nat |
| n0 | nat-basic1 | v | nat |
| n1 | nat-basic1 | v | nat |
| nat | nat-basic1 | s |