Hi Donna Y. A cardinal fraction (like "three fourths") measures the size of a set. An ordinal fraction (like "third fourth") identifies a set. The idea, name, notation and arithmetic of ordinal fractions was invented in 1980, and in 1986 I submitted a paper to the International Federation for Information Processing (IFIP). This paper was however rejected for publication. It is now found on www.academia.edu under my name (Bo Jacoby) or under the title (ORDINAL FRACTIONS - the algebra of data). Most people don't share my unweakened conviction that this is immensely useful.
Den 21:06 torsdag den 31. maj 2018 skrev Donna Y <dy...@sympatico.ca>: Are you re-inventing the rational numbers by another name? Donna Y dy...@sympatico.ca > On May 31, 2018, at 12:10 PM, 'Bo Jacoby' via Chat <c...@jsoftware.com> wrote: > > The ordinal fraction is my invention. ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm