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# begin fn (BeginFn)

A UnaryFunction that maps a TimeInterval to the TimePoint at which the interval begins.

## Ontology

SUMO / TEMPORAL-CONCEPTS

## Class(es)

 class

inheritable relation

temporal relation
 class

inheritable relation

unary function

begin fn

## Coordinate term(s)

absolute value fn  abstraction fn  arc cosine fn  arc sine fn  arc tangent fn  back fn  begin node fn  cardinality fn  ceiling fn  complement fn  cosine fn  cut set fn  day fn  denominator fn  end fn  end node fn  extension fn  floor fn  front fn  future fn  generalized intersection fn  generalized union fn  giga fn  hour fn  imaginary part fn  immediate future fn  immediate past fn  initial node fn  integer square root fn  kilo fn  list length fn  magnitude fn  mega fn  micro fn  milli fn  minimal cut set fn  minute fn  month fn  nano fn  numerator fn  organization fn  past fn  path weight fn  pico fn  power set fn  predecessor fn  principal host fn  probability fn  property fn  rational number fn  real number fn  reciprocal fn  recurrent time interval fn  relative time fn  round fn  second fn  signum fn  sine fn  skin fn  square root fn  successor fn  tangent fn  temporal composition fn  tera fn  terminal node fn  time interval fn  wealth fn  when fn  year fn  before  before or equal  cooccur  earlier  finishes  meets temporally  overlaps temporally  temporally between  temporally between or equal  time

## Type restrictions

time point BeginFn(time interval)

## Related WordNet synsets

beginning
the event consisting of the start of something: "the beginning of the war"

birth
the time when something begins (especially life); "they divorced after the birth of the child" or "his election signaled the birth of a new age"

terminus a quo, starting point
earliest limiting point

See more related synsets on a separate page.

## Axioms (16)

• if "the beginning of interval" is equal to point,
• then for all otherpoint holds: if otherpoint is a part of interval and otherpoint is not equal to point, then point happen?{s} before otherpoint
• .
```(=>
(equal
(BeginFn ?INTERVAL)
?POINT)
(forall
(?OTHERPOINT)
(=>
(and
(temporalPart ?OTHERPOINT ?INTERVAL)
(not
(equal ?OTHERPOINT ?POINT)))
(before ?POINT ?OTHERPOINT))))```

If process origins at obj, then "the place where process was at "the beginning of "the time of existence of process""" is located at "the place where obj was at "the beginning of "the time of existence of obj""".
```(=>
(origin ?PROCESS ?OBJ)
(located
(WhereFn
?PROCESS
(BeginFn
(WhenFn ?PROCESS)))
(WhereFn
?OBJ
(BeginFn
(WhenFn ?OBJ)))))```

interval1 starts interval2 if and only if "the beginning of interval1" is equal to "the beginning of interval2" and "the end of interval1" happen?{s} before "the end of interval2".
```(<=>
(starts ?INTERVAL1 ?INTERVAL2)
(and
(equal
(BeginFn ?INTERVAL1)
(BeginFn ?INTERVAL2))
(before
(EndFn ?INTERVAL1)
(EndFn ?INTERVAL2))))```

interval1 finishes interval2 if and only if "the beginning of interval2" happen?{s} before "the beginning of interval1" and "the end of interval2" is equal to "the end of interval1".
```(<=>
(finishes ?INTERVAL1 ?INTERVAL2)
(and
(before
(BeginFn ?INTERVAL2)
(BeginFn ?INTERVAL1))
(equal
(EndFn ?INTERVAL2)
(EndFn ?INTERVAL1))))```

• if obj is a result of proc,
• then for all time holds: if time happen?{s} before "the beginning of "the time of existence of proc"", then obj doesn't exist during time
• .
```(=>
(result ?PROC ?OBJ)
(forall
(?TIME)
(=>
(before
?TIME
(BeginFn
(WhenFn ?PROC)))
(not
(time ?OBJ ?TIME)))))```

phys exists during time and time is an instance of time point if and only if time is between or at "the beginning of "the time of existence of phys"" and "the end of "the time of existence of phys"".
```(<=>
(and
(time ?PHYS ?TIME)
(instance ?TIME TimePoint))
(temporallyBetweenOrEqual
(BeginFn
(WhenFn ?PHYS))
?TIME
(EndFn
(WhenFn ?PHYS))))```

If interval1 takes place during interval2, then "the end of interval1" happen?{s} before "the end of interval2" and "the beginning of interval2" happen?{s} before "the beginning of interval1".
```(=>
(during ?INTERVAL1 ?INTERVAL2)
(and
(before
(EndFn ?INTERVAL1)
(EndFn ?INTERVAL2))
(before
(BeginFn ?INTERVAL2)
(BeginFn ?INTERVAL1))))```

interval1 meets interval2 if and only if "the end of interval1" is equal to "the beginning of interval2".
```(<=>
(meetsTemporally ?INTERVAL1 ?INTERVAL2)
(equal
(EndFn ?INTERVAL1)
(BeginFn ?INTERVAL2)))```

If "the beginning of interval1" is equal to "the beginning of interval2" and "the end of interval1" is equal to "the end of interval2", then interval1 is equal to interval2.
```(=>
(and
(equal
(BeginFn ?INTERVAL1)
(BeginFn ?INTERVAL2))
(equal
(EndFn ?INTERVAL1)
(EndFn ?INTERVAL2)))
(equal ?INTERVAL1 ?INTERVAL2))```

interval1 happens earlier than interval2 if and only if "the end of interval1" happen?{s} before "the beginning of interval2".
```(<=>
(earlier ?INTERVAL1 ?INTERVAL2)
(before
(EndFn ?INTERVAL1)
(BeginFn ?INTERVAL2)))```

If "interval between point1 and point2" is equal to interval, then "the beginning of interval" is equal to point1 and "the end of interval" is equal to point2.
```(=>
(equal
(TimeIntervalFn ?POINT1 ?POINT2)
?INTERVAL)
(and
(equal
(BeginFn ?INTERVAL)
?POINT1)
(equal
(EndFn ?INTERVAL)
?POINT2)))```

If thing is an instance of physical, then "the beginning of "the time of existence of thing"" happen?{s} before "the end of "the time of existence of thing"".
```(=>
(instance ?THING Physical)
(before
(BeginFn
(WhenFn ?THING))
(EndFn
(WhenFn ?THING))))```

If process is an instance of physical, then "before "the time of existence of process"" is equal to "interval between negative infinity and "the beginning of "the time of existence of process""".
```(=>
(instance ?PROCESS Physical)
(equal
(PastFn
(WhenFn ?PROCESS))
(TimeIntervalFn
NegativeInfinity
(BeginFn
(WhenFn ?PROCESS)))))```

If parent is a parent of child, then "the beginning of "the time of existence of parent"" happen?{s} before "the beginning of "the time of existence of child"".
```(=>
(parent ?CHILD ?PARENT)
(before
(BeginFn
(WhenFn ?PARENT))
(BeginFn
(WhenFn ?CHILD))))```

```(=>
(instance ?ARTIFACT StationaryArtifact)
(exists
(?PLACE)
(forall
(?TIME)
(=>
(and
(beforeOrEqual
?TIME
(EndFn
(WhenFn ?ARTIFACT)))
(beforeOrEqual
(BeginFn
(WhenFn ?ARTIFACT))
?TIME))
(equal
(WhereFn ?ARTIFACT ?TIME)
?PLACE)))))```

If fully formed is an attribute of obj, then there exists growth growth so that obj experiences growth and non fully formed is an attribute of obj the beginning of "the time of existence of obj".
```(=>
(attribute ?OBJ FullyFormed)
(exists
(?GROWTH)
(and
(instance ?GROWTH Growth)
(experiencer ?GROWTH ?OBJ)
(holdsDuring
(BeginFn
(WhenFn ?OBJ))
(attribute ?OBJ NonFullyFormed)))))```