Earliest Uses of Various Mathematical SymbolsThese 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.
Please see also Earliest Known Uses of Some of the Words of Mathematics, Images of Mathematicians on Postage Stamps, and Ambiguously Defined Mathematical Terms at the High School Level.
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 is maintained by Jeff Miller, a teacher at Gulf High School in New Port Richey, Florida.