Earliest Uses of Various Mathematical SymbolsThese pages have been copied from a now defunct source. Some of the links may not work
These pages show the names of the individuals who first used various common mathematical symbols, and the dates the symbols first appeared. The most important written source is the definitive A History of Mathematical Notations by Florian Cajori.
Assistance for this page has been provided by Julio González Cabillón, John Aldrich, Avinoam Mann, Eddie Mizzi, Fred E. Wadley, Giovanni Ferraro, Judy Ann Brown, Len Berggren, Manoel Almeida, Michael Closs, Milo Gardner, Paul Pollack, and Samuel S. Kutler. The page was created by Jeff Miller, a teacher at Gulf High School in New Port Richey, Florida.