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#johannes_widmann

Johannes Widmann

German mathematician (c. 1460 – c. 1498)

Johannes Widmann was a German mathematician. The + and - symbols first appeared in print in his book Mercantile Arithmetic or Behende und hüpsche Rechenung auff allen Kauffmanschafft published in Leipzig in 1489 in reference to surpluses and deficits in business problems.

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Johannes Widmann Widmann Plus and minus signs Henricus Grammateus Table of mathematical symbols by introduction date Cross Jörg Widmann History of mathematical notation 1489 List of German scientists by century
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