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countably
In a countable manner; in a way that can be counted. / (mathematics) In a way that can be put into one-to-one correspondence with the natural numbers or any subset thereof.
countables
countable
Capable of being counted; having a quantity. / (mathematics, of a set) finite or countably infinite; having a one-to-one correspondence (bijection) with a subset of the natural numbers.
countable
countability
countably additive
countably infinite
(set theory, of a set) That is both countable and infinite; having the same cardinality as the set of natural numbers; formally, such that a bijection exists from ℕ to the set.
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.