Mathematician:Johannes Widmann

Mathematician
German mathematician best known for introducing the $+$ and $-$ symbols.

Nationality
German

History

 * Born: 1462 in Eger, Bohemia (now Cheb, Czech Republic)
 * Died: 1498 in Leipzig, Germany

Theorems and Definitions
Introduced in print the $+$ and $-$ symbols in the context of an indicator of positive quantity and negative quantity.

Publications

 * 1489: Behende und hübsche Rechenung auff allen Kauffmanschafft ("Nimble and neat calculation in all trades") (also known as Mercantile Arithmetic)

Also known as
His surname is variously otherwise presented as Widman, Weideman or Wideman.