cardinality of the rationals

The set of rational numbers $\mathbb{Q}$ is countable, and therefore its cardinality is ${\mathrm{\aleph }}_0$.

Title	cardinality of the rationals
Canonical name	CardinalityOfTheRationals
Date of creation	2013-03-22 11:59:47
Last modified on	2013-03-22 11:59:47
Owner	quadrate (89)
Last modified by	quadrate (89)
Numerical id	6
Author	quadrate (89)
Entry type	Theorem
Classification	msc 03E10
Synonym	power of the rationals
Related topic	Countable
Related topic	RationalNumber
Related topic	Irrational
Related topic	AlgebraicNumbersAreCountable
Related topic	A_nAreCountableSoIsA_1XXA_nIfA_1