Heinrich Schreiber (mathematician)

Heinrich Schreiber (also known as Heinrich Grammateus or Henricus Grammateus ; * before 1496, probably in 1492 in Erfurt , † Winter 1525 / 1526 in Vienna ) was a German mathematician and astronomer .

Schreiber enrolled at the University of Vienna in 1507 , then studied from 1514 to 1517 in Krakow and then returned to Vienna, where he appears in the minutes of the meeting as Magister Henricus Gramatheus . In Vienna he was the teacher of the mathematician Christoph Rudolff . When the University of Vienna was closed due to the plague in 1521, he went to Nuremberg, where he published several works on applied algebra and practical astronomy, including 1518 Ayn new kunstlich Buech ... in which he consistently used the symbols "+" and "-" for the first time. used for addition and subtraction . In addition to problems of algebra, he also deals with:

• the calculations on lines ,
• Rule tri ( rule of three),
• Regula falsi ,
• Proportions in music ( harmony theory ),
• "Welsche Praktik" (practical arithmetic, as it was used by the northern Italian merchants),
• Bookkeeping as well
• the barrel measurement with the sighting rod.

From 1525 he was back in Vienna, where he was appointed examiner for the baccalaureate and procurator of the Saxon nation . Soon afterwards he died in Vienna at the age of 33.

Illustration from "Ayn new kunstlich Buech ..."

Fonts

• Algorithm proportionum una cum monochordi generalis dyatonici compositione (Krakow 1514)
• Libellus de compositione regularum pro vasorum mensuratione. Deque arte ista tota theoreticae et practicae (Vienna 1518)
• Ayn new kunstlich Buech which certainly and nimbly learns according to the common rule detre Grammateum or Schreyber (Stuchs, Nürnberg 1518)
• Agile and artificial calculation according to the rule and wholesome practic with sambt preparation of the visor ym square and triangle (Stuchs, Nürnberg 1521)
• A skillful and skillful knowledge of the knowledge on the day by the sun and by the star at night some of the benefits of giving up in all parts of the world (Hölzel, Nuremberg 1522)
• Rechenbüchlin, artificial, agile and certain, on all Kauffmanschäft court (Egenolf, Frankfurt a. M. 1572)

literature

• Moritz Cantor :  Grammateus, Heinricus . In: Allgemeine Deutsche Biographie (ADB). Volume 9, Duncker & Humblot, Leipzig 1879, p. 578.
• Manfred Grieb: Nuremberg artist lexicon . Volume 1. Saur, Munich 2007, p. 501
• Kurt Vogel :  Grammateus, Heinrich. In: New German Biography (NDB). Volume 6, Duncker & Humblot, Berlin 1964, ISBN 3-428-00187-7 , p. 738 f. ( Digitized version ).
• Manfred Weidauer: Heinrich Schreyber from Erfurt, called Grammateus. Festschrift for the 500th birthday. Institute for the History of Natural Sciences, Munich 1996

Web links

• Heinrich Grammateus (Schreyber) at Astronomy in Nuremberg