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
Social Networks , Links
Interest
Loading Chart...
Lists
    index: 1x 0.030692100524902s
fmsppl-page-output: 1x 0.02708101272583s
t_/pages/fms-person-json: 1x 0.027055025100708s
t_/blocks/person-card-json: 1x 0.018044948577881s
headline: 8x 0.011359453201294s
t_/common/header: 1x 0.0083460807800293s
router_page: 1x 0.002810001373291s
t_/common/head: 1x 0.00067901611328125s
head-facts: 1x 0.00065398216247559s
t_/common/footer: 1x 0.00041604042053223s
t_/common/searcher-result: 1x 1.3113021850586E-5s
----- END OF DUMP (2026-09-22 14:26:09)  -----