Mathematician:Henricus Grammateus

Mathematician
German mathematician and music theorist best known for introducing the use of the $+$ and $-$ symbols in the context of addition and subtraction.

Nationality
German

History

 * Born: before 1496 (probably 1492) in Erfurt, Holy Roman Empire
 * Died: 1525 or 1526 in Vienna, Archduchy of Austria

Theorems and Definitions
Introduced the plus sign and minus sign in print.

Publications

 * 1514: Algorithmus proportionum una cum monochordi generalis dyatonici compositione
 * 1518: Libellus de compositione regularum pro vasorum mensuratione. Deque arte ista tota theoreticae et practicae
 * 1518: Ayn new Kunstlich Buech ("A New Skill Book")

Also known as
Also known as Henricus Scriptor, Heinrich Schreyber or Heinrich Schreiber.