Adriaan van Roomen
1561
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1615
country of citizenship: Germany
native language: Latin
languages spoken, written or signed: Latin
occupation: mathematician, professor
Adriaan van Roomen (29 September 1561 – 4 May 1615), also known as Adrianus Romanus, was a mathematician, professor of medicine and medical astrologer from the Duchy of Brabant in the Habsburg Netherlands who was active throughout Central Europe in the late 16th and early 17th centuries. As a mathematician he worked in algebra, trigonometry and geometry; and on the decimal expansion of pi. He solved the Problem of Apollonius using a new method that involved intersecting hyperbolas. He also wrote on the Gregorian calendar reform. Source: Wikipedia (en)
Human - wd:Q505646