## ARITY

### Arity

In logic, mathematics, and computer science, the**arity**of a function or operation is the number of arguments or operands the function or operation accepts. The arity of a relation is the dimension of the domain in the corresponding Cartesian product. The term springs from words like unary, binary, ternary, etc. Unary functions or predicates may be also called "monadic"; similarly, binary functions may be called "dyadic".

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### arity

#### Noun

- The number of arguments or operands a function or operation takes. For a relation, the number of domains in the corresponding Cartesian product.

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