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week duration (WeekDuration)

Time unit. A week's duration is seven days.

Ontology

SUMO / UNITS-OF-MEASURE

Class(es)

unit of measure
is instance of
  week duration  

Superclass(es)

[tree]
entity
is subclass of
  abstract  
is subclass of
  quantity  
is subclass of
  physical quantity  
is subclass of
  constant quantity  
is subclass of
  time measure  
is subclass of
  time duration  
is subclass of
  week duration  

Coordinate term(s)

amu  angstrom  angular degree  atom gram  bit  british thermal unit  byte  calorie  centimeter  cup  day duration  electron volt  euro cent  euro dollar  fahrenheit degree  foot  hour duration  inch  kilo byte  liter  mega byte  mile  minute duration  ounce  pint  pound force  pound mass  quart  rankine degree  second duration  slug  united kingdom gallon  united states cent  united states dollar  united states gallon  year duration 

Axioms (2)

If number is an instance of real number, then "number week duration(s)" is equal to ""number*" day duration(s)". 
(=>
      (instance ?NUMBER RealNumber)
      (equal
            (MeasureFn ?NUMBER WeekDuration)
            (MeasureFn
                  (MultiplicationFn ?NUMBER 7)
                  DayDuration)))
If week is an instance of week, then duration of week is " week duration(s)". 
(=>
      (instance ?WEEK Week)
      (duration
            ?WEEK
            (MeasureFn 1 WeekDuration)))