In mathematics, a countable set is a set with the same cardinality (i.e., number of elements) as some subset of the set of natural numbers. The term was originated by Georg Cantor ...
adjective . 1. able to be counted. 2. Mathematics. a. (of a set) having a finite number of elements. b. (of a set) having elements that form a one-to-one correspondence with the ...
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