Johann Rahn

Johann Rahn
Johann Rahn

Johann Rahn was a Swiss mathematician who is credited with the first use of the division sign, ÷ and the therefore sign, ∴. The symbols were used in Teutsche Algebra, published in 1659. John Pell collaborated with Rahn in this book, which contains an example of the Pell equation. It is uncertain whether Rahn or Pell was responsible for introducing the symbols.

From *.wikipedia.org,
General Info
.
Male
Date of Birth
March 10th, 1622
Age
404
Birth Place
Switzerland, Canton of Zürich, Winterthur
Date of Death
May 27th, 1676
Died Aged
54
Star Sign
Pisces
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