(mathematics) a mathematical relation such that each element of a given set (the domain of the function) is associated with an element of another set (the range of the function)

- map,
- mathematical function,
- threshold function,
- exponential,
- multinomial,
- single-valued function,
- metric,
- mapping,
- mathematical relation,
- trigonometric function,
- operator,
- Kronecker delta,
- exponential function,
- expansion,
- isometry,
- circular function,
- metric function,
- transformation,
- polynomial,
- inverse function

what something is used for

a formal or official social gathering or ceremony

a vaguely specified social event

a relation such that one thing is dependent on another

a set sequence of steps, part of larger computer program

- recursive routine,
- software system,
- cataloged procedure,
- subprogram,
- utility routine,
- computer programme,
- executive routine,
- library routine,
- program,
- routine,
- supervisory routine,
- contingency procedure,
- tracing routine,
- reusable routine,
- service routine,
- computer program,
- computer software,
- subroutine,
- package,
- software program,
- random number generator,
- software package,
- programme,
- procedure,
- software