Cardinality/Related Articles

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A list of Citizendium articles, and planned articles, about Cardinality.
See also changes related to Cardinality, or pages that link to Cardinality or to this page or whose text contains "Cardinality".


  • Finite set [r]: The number of its elements is a natural number (0,1,2,3,...) [e]
  • Countable set [r]: A set with as many elements as there are natural numbers, or less. [e]
  • Galileo's paradox [r]: The observation that there are fewer perfect squares than natural numbers but also equally many. [e]