Portrait of Regiomontanus from Liber chronicarum mundi, Nuremberg (1493). Johannes Muller von Konigsberg (June 6, 1436 - July 6 1476) today best known as Regiomontanus, was a German mathematician, astronomer, astrologer, translator, instrument maker and C
Portrait of Regiomontanus from Liber chronicarum mundi, Nuremberg (1493). Johannes Muller von Konigsberg (June 6, 1436 - July 6 1476) today best known as Regiomontanus, was a German mathematician, astronomer, astrologer, translator, instrument maker and Catholic bishop. He was a pupil and friend of Georg von Peurbach. In 1452 he graduated BA and was awarded his Master of Arts at the age of 21. In 1457 he held lectures in optics and ancient literature. He continued to work with Peuerbach learning and extending the then known areas of astronomy, mathematics and instrument making until Peuerbach's death in 1461. He left Vienna and spent the next four years traveling around Italy looking for and copying mathematical and astronomical manuscripts. His work on arithmetic and algebra, Algorithmus Demonstratus, was among the first containing symbolic algebra. In 1465, he built a portable sundial for Pope Paul II. He also designed his own astrological system in the 15th century, which was one of the most popular systems in Europe in its time. In 1475 he went to Rome to work with Pope Sixtus IV on calendar reform. He died of unknown causes in 1476 at the age of 40. According to a rumor he was assassinated by relatives of George of Trebizond whom he had criticized in his writings. More likely he died in an epidemic raging in Rome at the time.
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