Mathematician:Simon Stevin

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Flemish mathematician, engineer and writer most famous for inventing the decimal notation for the rendering of fractions.

Recommended the use of a decimal system be used for weights and measures, coinage and for measurement of angles.

Wrote most of his work in Dutch, believing it the best language for communication of scientific and mathematical ideas.




  • Born: 1548 in Bruges, Burgundian Netherlands (now Belgium)
  • Died: February 1620 in The Hague, Dutch Republic (now Netherlands)


  • 1582: Tafelen van Interest ("Tables of interest")
  • 1583: Problemata geometrica
  • 1585: De Thiende ("The tenth") in which decimals were introduced into Europe
  • 1585: La pratique d'arithmétique
  • 1585: L'arithmétique in which he presented a uniform treatment for solving algebraic equations