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The OP is correct. Cardinality in mathematics is the number of elements in a set[1]. What you are probably referring to is the concept of cardinal numbers[2]. I guess you can skip the smug tone.

[1] http://en.wikipedia.org/wiki/Cardinality [2] http://en.wikipedia.org/wiki/Cardinal_number




He can't even claim that. Cardinal numbers include the finite cardinals, after all.




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