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Countability (Mathematics) (view source)

Revision as of 23:32, January 6, 2010

7 bytes added , 23:32, January 6, 2010

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superb entry! how about number -> unique number

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[[Image:Rationals countable.jpg|right|250px|thumb|While some details remain, such as eliminating reducible fractions, this picture shows the idea behind a numbering of all fractions.]]

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In mathematics, a set is called '''countable''' if it can be numbered in such a way that every element will eventually receive a number.

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In mathematics, a set is called '''countable''' if it can be numbered in such a way that every element will eventually receive a unique number.

==Examples of Countable Sets==

Aschlafly

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