English

Adjective

denumerable ‎(not comparable)

1. (mathematics) Capable of being assigned numbers from the natural numbers. Especially applied to sets where finite sets and sets that have a one-to-one mapping to the natural numbers are called denumerable.

   The empty set is denumerable because it is finite; the rational numbers are, surprisingly, denumerable because every possible fraction can be assigned a number.

Derived terms

• denumerability

Synonyms

• countable

See also

• countable set
• uncountable set