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
