
 Musical set theory Article, Musicalsettheory Information (Site not responding. Last check: 20071020) 
  Although musical set theory may be considered the application of mathematical set theory to music, there is often little coincidence between the terminology and possibly the methods ofthe two. 
  Musical settheory may, however, be considered as an unrelated field from mathematical set theory that, at the most, adapted some techniquesfrom mathematical set theory for its own uses. 
  Multiplication is multiplying the pitch class numbers of a set, the most usefulmultipliers are 1, 5, 7, 11, as multiplication by 1 is the same, multiplication by 11 is inversion, multiplication of thechromatic scale by 5 produces the circle of fourths and multiplication by 7 producesthe circle of fifths. 
 www.anoca.org /form/normal/musical_set_theory.html (1251 words) 
