Countable set/Related Articles

See also changes related to Countable set, or pages that link to Countable set or to this page or whose text contains "Countable set".

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Parent topics

• Cardinality [r]: The size, i.e., the number of elements, of a (possibly infinite) set. ^[e]
• Set (mathematics) [r]: Informally, any collection of distinct elements. ^[e]
• Set theory [r]: Mathematical theory that models collections of (mathematical) objects and studies their properties. ^[e]

Subtopics

• Aleph-0 [r]: Cardinality (size) of the set of all natural numbers. ^[e]

Other related topics

• Infinity [r]: Add brief definition or description
• Natural number [r]: An element of 1, 2, 3, 4, ..., often also including 0. ^[e]
• Galileo's paradox [r]: The observation that there are fewer perfect squares than natural numbers but also equally many. ^[e]
• Hilbert's hotel [r]: A fictional story which illustrates certain properties of infinite sets. ^[e]
• Cantor's diagonal argument [r]: Proof due to Georg Cantor showing that there are uncountably many sets of natural numbers. ^[e]