# Cantor's diagonal argument/Related Articles

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*See also changes related to Cantor's diagonal argument, or pages that link to Cantor's diagonal argument or to this page or whose text contains "Cantor's diagonal argument".*

## Parent topics

- Set theory [r]: Mathematical theory that models collections of (mathematical) objects and studies their properties.
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- Mathematical proof [r]:
*Add brief definition or description* - Georg Cantor [r]: (1845-1918) Danish-German mathematician who introduced set theory and the concept of transcendental numbers
^{[e]} - Cardinality [r]: The size, i.e., the number of elements, of a (possibly infinite) set.
^{[e]} - Power set [r]: The set of all subsets of a given set.
^{[e]} - Natural number [r]: An element of 1, 2, 3, 4, ..., often also including 0.
^{[e]} - Real number [r]: A limit of the Cauchy sequence of rational numbers.
^{[e]} - Countable set [r]: A set with as many elements as there are natural numbers, or less.
^{[e]} - Halting problem [r]: The task to decide whether a certain computer (executing a certain program) will eventually stop.
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