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How to count?

Posted By: Jason Lee
Date: Wednesday, 9 December 2009, at 6:00 p.m.

In Response To: How to count? (Bob Koca)

Start by defining 0 to be the cardinality of the empty set.

Let's go around in circles! A cardinal number IS a set, and so the cardinality of the empty set is the empty set. =)

JLee (pedantry is fun with set theory)

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