Hypergroups and Signed Hypergroups
Kenneth A. Ross · Birkhäuser Boston eBooks · 1998
Hypergroups, as I understand them, have been around since the early 1970’s when Charles Dunkl, Robert Jewett and René Spector independently created locally compact hypergroups with the purpose of doing standard harmonic analysis. As one would expect, there were technical differences in their definitions. The standard, in the non-Soviet world, became Jewett’s 101-page paper [J] because he worked out a good deal of the basic theory that people would want. Bloom and Heyer’s book [BH] is a useful report on some of the mathematics that has been done on the basis of Jewett’s axioms. These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.