Reinher von Paderborn

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Reinher von Paderborn (also Reinherus, Reinherius or Reiner) (* approx. 1140 in Paderborn ; † approx. 1190 there) was a master's degree, director of the Paderborn cathedral school , and at the same time cathedral dean and computist .

In 1171 Reinher published his work Computus emendatus , in which he presented an improved method for calculating the Christian Easter date . He noticed a misunderstanding regarding the lunar cycle ( lunation ) when calculating the calendar used up until his lifetime . For this purpose he compared the lunations of the Jewish calendar with those of the calendar of Dionysius Exiguus († 540). Reinher used the decimal system and Indo-Arabic instead of Roman numerals in Western Europe for the first time , as they seemed to him to be more advantageous for arithmetic calculations. With his work Reinher wanted to increase the reputation of the Catholic Church in calculating calendars . He probably also contributed to the fact that the cathedral school enjoyed a high reputation in mathematics at that time.

At the Council of Basel (1431–1437) on calendar reform , Hermann Zoestius and Nikolaus von Kues used his work.

Reinher is named as a witness in 15 Paderborn documents.

Web links

literature

  • Werner Herold (ed.); Reinher von Paderborn: Computus emendatus . Edited, compiled, translated and supplemented with explanations on computistics and Reinher's work and person, Bonifatius, Paderborn, 2011, ISBN 978-3-89710-493-8
  • Reinerus Paderbrunnensis: Le comput emendé: (1171) / par WE van Wijk; Amsterdam: North-Holland, 1951. - 80 p. (Verhandelingen / Koninklijke Nederlandse Akademie van Wetenschappen, Afd.Letterkunde; NR, 57.3)
  • C. Philipp E. Nothaft: Dating the Passion. The Life of Jesus and the Emergence of Scientific Chronology (200-1600) . Brill, Leiden 2012, pp. 128-142, ISBN 978-90-04-21219-0 . Digitized in the Google book search.
  • C. Philipp E. Nothaft: Medieval Latin Christian Texts on the Jewish Calendar. A Study with Five Editions and Translations . Brill, Leiden 2014, pp. 12-14, 63-67 and passim, ISBN 978-90-04-27244-6 .

Individual evidence

  1. ^ Rudolf Flotzinger: From Leonin to Perotin - The musical paradigm shift in Paris around 1210 . Peter Lang, Bern 2007, p. 166 ( digitized version in the Google book search).
personal data
SURNAME Reinher von Paderborn
ALTERNATIVE NAMES Reinherus; Reinherius; Purer
BRIEF DESCRIPTION German Magister, Dean of the Paderborn Cathedral Chapter, computist
DATE OF BIRTH around 1140
PLACE OF BIRTH Paderborn
DATE OF DEATH around 1190
Place of death Paderborn