Leo the Mathematician

Leo the Mathematician
   Teacher and scholar; also called Leo the Philosopher. He was a nephew (or cousin) of John VII Grammatikos and metropolitan of Thessalonike (qq.v.) from 840-843. However, his fame rested on his knowledge of philosophy (q.v.) and mathematics, which attracted the attention of even the caliph Mamun (qq.v.). The caliph invited him to Baghdad (q.v.), but when Theophilos (q.v.) heard of the invitation he employed him to teach in the Magnaura (q.v.) palace. For Theophilos he built some remarkable automata (q.v.), as well as a beacon system (q.v.) that warned of Arab raids.

Historical Dictionary of Byzantium . .

Игры ⚽ Нужен реферат?

Look at other dictionaries:

  • Leo Moser — (April 111921 mdash;February 91970) was an Austrian Canadian mathematician, best known for his polygon notation.A native of Vienna, Leo Moser immigrated with his parents to Canada at the age of three. He received his Bachelor of Science degree… …   Wikipedia

  • Leo Motzkin — (1867 1933) was a Russian Zionist leader. A leader of the World Zionist Congress and numerous Jewish and Zionist organizations, Motzkin was a key organizer of the Jewish delegation to the 1919 Paris Peace Conference and one of the first Jewish… …   Wikipedia

  • The Benedictine Order —     The Benedictine Order     † Catholic Encyclopedia ► The Benedictine Order     The Benedictine Order comprises monks living under the Rule of St. Benedict, and commonly known as black monks . The order will be considered in this article under… …   Catholic encyclopedia

  • Nicomedes (mathematician) — Conchoids of line with common center. Nicomedes (Νικομήδης; ca. 280 BC – ca. 210 BC) was an ancient Greek mathematician. Contents 1 Life and work …   Wikipedia

  • Squaring the circle — Squaring the circle: the areas of this square and this circle are equal. In 1882, it was proven that this figure cannot be constructed in a finite number of steps with an idealized compass and straightedge …   Wikipedia

  • Diocles (mathematician) — Diocles (Διοκλῆς in Ancient Greek, ca. 240 BC – ca. 180 BC) was a Greek mathematician and geometer. Life and work Although little is known about the life of Diocles, it is known that he was a contemporary of Apollonius and that he flourished… …   Wikipedia

  • The Church in China —     The Church in China     † Catholic Encyclopedia ► The Church in China     Ancient Christians     The introduction of Christianity into China has been ascribed not only to the Apostle of India, St. Thomas, but also to St. Bartholomew. In the… …   Catholic encyclopedia

  • Leo Königsberger — (October 15, 1837–December 15, 1921) was a German mathematician, and historian of science. He is best known for his three volume biography of Hermann von Helmholtz, which remains the standard reference on the subject.Königsberger was born in… …   Wikipedia

  • Aristarchus On the Sizes and Distances — Aristarchus s 3rd century BC calculations on the relative sizes of, from left, the Sun, Earth and Moon, from a 10th century CE Greek copy On the Sizes and Distances (of the Sun and Moon) (Περὶ μεγεθῶν καὶ ἀποστημάτων [ἡλίου καὶ σελήνης]) is… …   Wikipedia

  • Doubling the cube — (also known as the Delian problem) is one of the three most famous geometric problems unsolvable by compass and straightedge construction. It was known to the Egyptians, Greeks, and Indians.[1] To double the cube means to be given a cube of some… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”