Unary function: Difference between revisions

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{{Short description|Function that takes one argument}}

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In [[mathematics]], a '''unary function''' is a [[function (mathematics)|function]] that takes one [[Arity|argument]]. A [[unary operator]] belongs to a subset of unary functions, in that its [[codomain]] coincides with its [[___domain of a function|___domain]]. In contrast, a unary function's ___domain need not coincide with its range.

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</math>

In manysome [[programming language]]s such as [[C (programming language)|C]], executing this operation is denoted by [[Reverse Polish notation|postfixing]] {{code|++}} to the operand, i.e. the use of {{code|n++}} is equivalent to executing the assignment <math> n:= \operatorname{succ}(n)</math>.

Many of the [[elementary function]]s are unary functions, including the [[trigonometric functions]], [[logarithm]] with a specified base, [[exponentiation]] to a particular power or base, and [[hyperbolic function]]s.

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* [[Arity]]

* [[Binary function]]

* [[Binary operatoroperation]]

* [[Iterated binary operation]]

* [[Ternary operation]]

* [[Unary operation]]

== ReferencesBibliography ==

* [http://www.cs.ucl.ac.uk/staff/W.Langdon/FOGP Foundations of Genetic Programming]