year fn (YearFn)

A UnaryFunction that maps a number to the corresponding calendar Year. For example, (YearFn 1912) returns the Class containing just one instance, the year of 1912. As might be expected, positive integers return years in the Common Era, while negative integers return years in B.C.E. Note that this function returns a Class as a value. The reason for this is that the related functions, viz. MonthFn, DayFn, HourFn, MinuteFn, and SecondFn, are used to generate both specific TimeIntervals and recurrent intervals, and the only way to do this is to make the domains and ranges of these functions classes rather than individuals.

Ontology

SUMO / TEMPORAL-CONCEPTS

Class(es)

class

inheritable relation

temporal relation
is instance of

class

inheritable relation

unary function
is instance of

year fn

Coordinate term(s)

absolute value fn abstraction fn arc cosine fn arc sine fn arc tangent fn back fn begin 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 before before or equal cooccur earlier finishes meets temporally overlaps temporally temporally between temporally between or equal time

Type restrictions

subclass year YearFn(integer)

Axioms (1)

year is internally related to year fn.

(relatedInternalConcept Year YearFn)