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Arity vs Nullary - What's the difference?

arity | nullary |

As a noun arity

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

As an adjective nullary is

taking no entries; having trivial domain; having the arity of zero.

arity

English

Noun

(wikipedia arity) (arities)
  • (logic, mathematics, computer science) The number of arguments or operands a function or operation takes. For a relation, the number of domains in the corresponding Cartesian product.

    • Synonyms

    * (number of arguments) adinity, adicity, type, rank

    nullary

    English

    Adjective

    (-)
  • (mathematics, of a function) Taking no entries; having trivial domain; having the arity of zero.
  • Taking no arguments.

    • Synonyms

    * niladic * zeroary

    Derived terms

    * nullary sum