ABSTRACT
A set class is a family of sets that subsumes all Tn and TnI forms of an unordered pc set. Set classes have two labels. One of these is the prime form, already discussed in some detail in Chapter 4. The other is a hyphenated number. The number to the left of the hyphen indicates the cardinality of the set (i.e., its size) while the number to the right of the hyphen indicates the set’s order position on the list of set classes provided in Appendix B.1
