| | 1 | === Base Template !BeginningEndOfIndividual === |
| | 2 | |
| | 3 | [[br]]This is a template for stating start and end times of existence. |
| | 4 | [[br]]!BeginningEndOfIndividual(a, b, c) means that a is an individual and b and c are points in time, and that a begins to exist at b and ceases to exist at c. |
| | 5 | [[br]] |
| | 6 | [[br]]Roles: |
| | 7 | [[br]]1 hasIndividual !PossibleIndividual |
| | 8 | [[br]]2 hasStartTime !RepresentationOfGregorianDateAndUtcTime |
| | 9 | [[br]]3 hasEndTime !RepresentationOfGregorianDateAndUtcTime |
| | 10 | |
| | 11 | Axiom: |
| | 12 | {{{ |
| | 13 | BeginningEndOfIndividual(x1, x2, x3) <-> |
| | 14 | PossibleIndividual(x1) & |
| | 15 | RepresentationOfGregorianDateAndUtcTime(x2) & |
| | 16 | RepresentationOfGregorianDateAndUtcTime(x3) & |
| | 17 | exists u(PointInTime(u) & BeginningTemplate(u, x1) & |
| | 18 | ClassOfRepresentationOfThingTemplate(x2, u)) & |
| | 19 | exists u(PointInTime(u) & EndTemplate(u, x1) & |
| | 20 | ClassOfRepresentationOfThingTemplate(x3, u)) . |
| | 21 | }}} |
| | 22 | |
| | 23 | EXAMPLE The statement !BeginningEndOfIndividual(Survey # 23, 2009–10–19 , 2009–10–21) |
| | 24 | |
| | 25 | Note that no designation for the !PointInTime instances is defined. |
