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| | Peter Suber, "Infinite Reflections" |
 | | Either all infinite sets are equal in cardinality, or all infinite sets have a larger cardinality than their proper subsets, but not both. |
 | | This innovation is due to Georg Cantor, as is set theory itself, the theory of infinite sets, and the modern concept of infinite cardinality. |
 | | For example, an infinite set with this property will not grow in cardinality as we add members to it, one at a time (see Theorem 7 in the Appendix), and will not shrink in cardinality as we subtract members from it, one at a time (see Theorems 8 and 9 in the Appendix). |
| www.earlham.edu /~peters/writing/infinity.htm (11084 words) |
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