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- Johann_Rahn abstract "Johann Rahn (Latinised form Rhonius) (1622–1676) was a (* March 10, 1622 Töss (Winterthur), † May 25, 1676 in Zurich) Swiss mathematician who is credited with the first use of the division symbol, ÷ (obelus) and the therefore sign, ∴. He is known for his Teutsche algebra, the first time the Geteiltzeichen characters appear in print. The symbol is used in Teutsche Algebra, published in 1659. John Pell collaborated with Rahn in this book, which contains an example of the Pell equation, Pell-loading of the English translation of the book of Rahn. There is a controversy in Pell awards, rather than Rahn, authorship notations. Rahn was also, it seems, mayor of the city of Zurich in 1655.".
- Johann_Rahn birthDate "1622".
- Johann_Rahn birthYear "1622".
- Johann_Rahn deathDate "1676".
- Johann_Rahn deathYear "1676".
- Johann_Rahn wikiPageExternalLink Teutsche_Algebra.html?id=ZJg_AAAAcAAJ.
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- Johann_Rahn dateOfBirth "1622".
- Johann_Rahn dateOfDeath "1676".
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- Johann_Rahn name "Rahn, Johann".
- Johann_Rahn shortDescription "Swiss mathematician".
- Johann_Rahn description "Swiss mathematician".
- Johann_Rahn description "Swiss mathematician".
- Johann_Rahn subject Category:1622_births.
- Johann_Rahn subject Category:1676_deaths.
- Johann_Rahn subject Category:17th-century_mathematicians.
- Johann_Rahn subject Category:Swiss_mathematicians.
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- Johann_Rahn comment "Johann Rahn (Latinised form Rhonius) (1622–1676) was a (* March 10, 1622 Töss (Winterthur), † May 25, 1676 in Zurich) Swiss mathematician who is credited with the first use of the division symbol, ÷ (obelus) and the therefore sign, ∴. He is known for his Teutsche algebra, the first time the Geteiltzeichen characters appear in print. The symbol is used in Teutsche Algebra, published in 1659.".
- Johann_Rahn label "Johann Heinrich Rahn (Mathematiker)".
- Johann_Rahn label "Johann Heinrich Rahn".
- Johann_Rahn label "Johann Rahn".
- Johann_Rahn label "Ран, Иоганн".
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- Johann_Rahn name "Johann Rahn".
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- Johann_Rahn surname "Rahn".