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Regiomontanus

Regiomontanus
Johannes Regiomontanus2.jpg
Regiomontanus
Born (1436-06-06)6 June 1436
Unfinden, Holy Roman Empire, now part of Königsberg, Bavaria, Germany
Died 6 July 1476(1476-07-06) (aged 40)
Rome
Nationality German
Fields Mathematics, astronomy, astrology
Alma mater University of Leipzig
University of Vienna
Academic advisors Georg von Peuerbach
Basilios Bessarion
Notable students Domenico Novara da Ferrara

Johannes Müller von Königsberg (6 June 1436 – 6 July 1476), today best known by the Latin epithet Regiomontanus, was a German mathematician, astronomer, astrologer, translator, instrument maker and Catholic bishop.

He was born in the Franconian village of Unfinden, now part of Königsberg, Bavaria — not in the more famous East-Prussian Königsberg.

He was also known as Johannes der Königsberger (Johannes of Königsberg). His writings were published under the name of Ioannes de Monte Regio, a Latinized version of his name. Both names mean "John of King's Mountain". The name "Regiomontanus" was first coined by Philipp Melanchthon in 1534, fifty-eight years after Regiomontanus' death.

At eleven years of age, Regiomontanus became a student at the university in Leipzig, Saxony. In 1451 he continued his studies at Alma Mater Rudolfina, the university in Vienna, Austria. There he became a pupil and friend of Georg von Peuerbach. In 1452 he graduated with a BA and was awarded his “magister artium” (Master of Arts) at the age of 21 in 1457. It is known that he held lectures in optics and ancient literature.

Regiomontanus continued to work with Peuerbach learning and extending the then known areas of astronomy, mathematics and instrument making until Peuerbach's death in 1461.

In 1460 the papal legate Basilios Bessarion came to Vienna on a diplomatic mission. Being a humanist scholar and great fan of the mathematical sciences, Bessarion sought out Peuerbach's company. George of Trebizond who was Bessarion's philosophical rival had recently produced a new Latin translation of Ptolemy's Almagest from the Greek, which Bessarion, correctly, regarded as inaccurate and badly translated, so he asked Peuerbach to produce a new one. Peuerbach's Greek was not good enough to do a translation but he knew the Almagest intimately so instead he started work on a modernised, improved abridgement of the work. Bessarion also invited Peuerbach to become part of his household and to accompany him back to Italy when his work in Vienna was finished. Peuerbach accepted the invitation on the condition that Regiomontanus could also accompany them. However Peuerbach fell ill in 1461 and died only having completed the first six books of his abridgement of the Almagest. On his death bed Peuerbach made Regiomontanus promise to finish the book and publish it.


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