countably infinite

Tanımlar (İngilizce)

1. sıfat That is both countable and infinite; having the same cardinality as the set of natural numbers; formally, such that a bijection exists from ℕ to the set.

   “Instead of saying that the aggregate of natural numbers is countably infinite (see Chapter 24), one can use Cantor's symbolism and state that its cardinal number is #92;aleph#95;0 (read aleph null).[…]Now the range of a random variable may be a finite set, a countably infinite set, or a continuum.”