Countable set/Related Articles
From Citizendium, the Citizens' Compendium
- See also changes related to Countable set, or pages that link to Countable set or to this page or whose text .
- Cardinality : The size, i.e., the number of elements, of a (possibly infinite) set.
- Set (mathematics) : Informally, any collection of distinct elements.
- Set theory : Mathematical theory that models collections of (mathematical) objects and studies their properties.
- Aleph-0 : Cardinality (size) of the set of all natural numbers.
- Infinity : Add brief definition or description
- Natural number : An element of 1, 2, 3, 4, ..., often also including 0.
- Galileo's paradox : The observation that there are fewer perfect squares than natural numbers but also equally many.
- Hilbert's hotel : A fictional story which illustrates certain properties of infinite sets.
- Cantor's diagonal argument : Proof due to Georg Cantor showing that there are uncountably many sets of natural numbers.