Arity
Number of arguments required by a function / From Wikipedia, the free encyclopedia
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"Adicity" redirects here. Not to be confused with Acidity.
In logic, mathematics, and computer science, arity (/ˈærɪti/ ⓘ) is the number of arguments or operands taken by a function, operation or relation. In mathematics, arity may also be called rank,[1][2] but this word can have many other meanings. In logic and philosophy, arity may also be called adicity and degree.[3][4] In linguistics, it is usually named valency.[5]