Publisher's Synopsis
Excerpt from The Continuum, and Other Types of Serial Order: With an Introduction to Cantor's Transfinite Numbers
For example, the class of prime numbers is a class of numbers determined by the condition that every number which belongs to it must have no factors other than itself and 1. Again, the class of men is a class of living beings determined by certain conditions set forth in works on biology. Finally, the class of perfect square numbers which end in 7 is an empty class, since every perfect square number must end in 0, 1, 4, 5, 6, or 9.
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