(redirected from Johann Muller)
Also found in: Dictionary, Thesaurus, Wikipedia.


(rē'jēōmŏn'tā`nəs) [Lat.,=belonging to the royal mountain, i.e., to Königsberg], 1436–76, German astronomer and mathematician, b. Königsberg. His original name was Johannes Müller. In 1461 he went to Rome with Cardinal Bessarion and learned Greek in order to translate Greek writings. In 1468 he was called to the court of the king of Hungary to make a collection of Greek manuscripts, and three years later he settled at Nuremberg, where, with his pupil and patron, Bernhard Walther, he established an observatory and a printing press. Among other works they published the Ephemerides for the years 1474–1506, calculated by Regiomontanus, and Georg von Purbach's Theoricae planetarum novae. Summoned by Pope Sixtus IV, Regiomontanus went to Rome in 1475 to assist in reforming the calendar and was made bishop of Regensburg. He died in Rome. He made improved instruments, both mathematical and astronomical, introduced algebra into Germany, and did much to further trigonometry.
The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved.
Enlarge picture
A sixteenth-century wood engraving of Ptolemy’s system called “Regiomontanus.” Reproduced by permission of Fortean Picture Library.

Regiomontanus (Johann Müller)

(religion, spiritualism, and occult)

Regiomontanus (born Johann Müller), a German astronomer and astrologer, was born on June 6, 1436, in Königsberg, Germany. He established an observatory at Nuremberg, where he observed Halley’s comet. Regiomontanus also published ephemerides (tables of planetary positions) that were used by, among other people, Christopher Columbus. He was brought to Rome by Pope Sixtus IV to help devise the calendar. Regiomontanus was also the translator of Ptolemy’s Almagest. He died in Rome on July 6, 1476. He is best remembered by astrologers for the system of house division that bears his name.

The Astrology Book, Second Edition © 2003 Visible Ink Press®. All rights reserved.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



(pseudonym of Johann Müller). Born June 6, 1436, in Königsberg, Franconia (then a part of Germany); died July 6, 1476, in Rome. German astronomer and mathematician. Student of G. Purbach.

Regiomontanus lived in Italy from 1461 to 1468, studying the works of the Greek mathematicians and astronomers. From 1468 to 1471 he was a professor at the University of Vienna. In 1471 he settled in Nuremberg, where an astronomical observatory, a workshop for the construction of astronomical instruments, and a printing press were built for him. In 1475 he moved to Rome at the invitation of the pope to participate in research on calendar reform.


Berry, A. Kratkaia istoriia astronomii, 2nd ed. Moscow-Leningrad, 1946. (Translated from English.)
Cantor, M. Vorlesungen über Geschichte der Mathematik, vol. 2. Leipzig, 1913.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.


original name Johann M?ller. 1436--76, German mathematician and astronomer, who furthered the development of trigonometry
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
On the playing front high-profile names Tom Court and John Afoa moved to the English Premiership while Johann Muller and Stephen Ferris retired.
Forwards Johann Muller, Rory Best and Stevie Ferris are among those rested and the Ulster pack could find it hard going against a strong Munster tight five, while playmaker Ruan Pienaar is also given the evening off.
From a lineout take from Johann Muller, Simone Favaro strayed offside and Marshall scored from a quick tap for the bonus score Ulster needed.
JOHANN MULLER believes Ulster are in the Heineken Cup Group of Death - but he won't settle for anything less than a quarter-final place.
From the lineout Rory Best's throw missed Johann Muller but when Jerry Collins failed to gather the overthrow, Ferris scooped up the ball and ran over unopposed.
A new second-row partnership alongside Wasps' Tom Palmer is England's seventh different combination in little more than six months, and the rookie pair face a considerable task opposite South African lineout duo Johan Ackermann and Johann Muller.
The departure of key players, including skipper Johann Muller and props John Afoa and Tom Court, coincided with the exit of coach Mark Anscombe and director of rugby David Humphreys.
Declan Fitzpatrick, who joins Ireland duo Tom Court and Rory Best in the Ulster front-row, is fresh after a lay-off and together with locks Johann Muller and Dan Tuohy, they can boss the setpiece, while Stephen Ferris, Pedrie Wannenburg and Willie Faloon are a defensively formidable back row.
Meanwhile, South African lock Johann Muller believes the tough World Cup pool that comprises Wales, Samoa, Fiji and Namibia might be the best possible preparation for the team ahead of the knockout stages.
Bath were leading 14-13 when over-eager Butch James was sinbinned on 44 minutes for getting involved in a flare-up between Michael Classens and Johann Muller.
Pienaar, who will join fellowSouth Africa caps Johann Muller and Pedrie Wannenburg in Belfast, said: "I'm very excited about the change."
"Some people have said we have lost a lot of experience and leadership with players like Johann Muller, Tom Court and John Afoa leaving in the summer but I believe the new arrivals will bring something different to the team.