constant quantity (ConstantQuantity)
A ConstantQuantity is a
PhysicalQuantity which has a constant value, e.g. 3 meters and 5 hours.
The magnitude (see MagnitudeFn) of every ConstantQuantity is a
RealNumber. ConstantQuantities are distinguished from
FunctionQuantities, which map ConstantQuantities to other
ConstantQuantities. All ConstantQuantites are expressed with the
BinaryFunction MeasureFn, which takes a Number and a UnitOfMeasure
as arguments. For example, 3 Meters can be expressed as (MeasureFn 3
Meter). ConstantQuantities form a partial order (see
PartialOrderingRelation) with the lessThan relation, since lessThan
is a RelationExtendedToQuantities and lessThan is defined over the
RealNumbers. The lessThan relation is not a total order (see
TotalOrderingRelation) over the class ConstantQuantity since elements
of some subclasses of ConstantQuantity (such as length quantities)
are incomparable to elements of other subclasses of ConstantQuantity
(such as mass quantities).
SUMO / BASE-ONTOLOGY
unit of measure
Related WordNet synsets
See more related synsets on a separate page.
physical quantity is exhaustively partitioned into constant quantity,function quantity.
(partition PhysicalQuantity ConstantQuantity FunctionQuantity)
If function is an instance of unary constant functionquantity, then the number argument of function is an instance of constant quantity and range of function is an instance of constant quantity.
(instance ?FUNCTION UnaryConstantFunctionQuantity)
(domain ?FUNCTION 1 ConstantQuantity)
(range ?FUNCTION ConstantQuantity)))