In dictionaries:
countable set
Set with finite or countable elements.
countable nouns
countable noun
Noun that can be quantified.
countable additivity
(mathematical analysis) The following property of a measure: that the measure of a countable union of disjoint sets is equal to the sum of their measures.
countable infinity
countable sets
axiom of countable choice
(set theory) A weaker form of the axiom of choice that states that every countable collection of nonempty sets must have a choice function; equivalently, the statement that the direct product of a countable collection of nonempty sets is nonempty.
second countable
Alternative form of second-countable [(topology) Such that its topology has a countable base, said of a topological space.]
Large countable ordinal
In the mathematical discipline of set theory, there are many ways of describing specific countable ordinals.
not countable
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