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Euclides Danicus
''Euclides Danicus'' (the Danish Euclid) is one of three books of mathematics written by Georg Mohr. It was published in 1672 simultaneously in Copenhagen and Amsterdam, in Danish and Dutch respectively. It contains the first proof of the Mohr–Mascheroni theorem, which states that every geometric construction that can be performed using a compass and straightedge can also be done with compass alone.. The book is divided into two parts. In the first part, Mohr shows how to perform all of the constructions of Euclid's ''Elements'' using a compass alone. In the second part, he includes some other specific constructions, including some related to the mathematics of the sundial. ''Euclides Danicus'' languished in obscurity, possibly caused by its choice of language, until its rediscovery in 1928 in a bookshop in Copenhagen. Until then, the Mohr–Mascheroni theorem had been credited to Lorenzo Mascheroni, who published a proof in 1797, independently of Mohr's work. Soon after the red ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Georg Mohr
Jørgen Mohr (Latinised ''Georg(ius) Mohr''; 1 April 1640 – 26 January 1697) was a Danish mathematician, known for being the first to prove the Mohr–Mascheroni theorem, which states that any geometric construction which can be done with compass and straightedge can also be done with compasses alone. Biography Mohr was born in Copenhagen, the son of a tradesman named David Mohrendal. Beginning in 1662 he traveled to the Netherlands, to study mathematics with Christiaan Huygens.. In 1672 he published his first book, '' Euclides Danicus'', simultaneously in Copenhagen and Amsterdam, in Danish and Dutch respectively. This book, proving the Mohr–Mascheroni theorem 125 years earlier than Lorenzo Mascheroni, would languish in obscurity until its rediscovery in 1928.. Mohr served in Franco-Dutch War in 1672–1673, and was taken prisoner by the French. By 1673, he had published his second book, ''Compendium Euclidis Curiosi''. A third book was later mentioned by Mohr's son; for man ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nathan Altshiller Court
Nathan Altshiller Court (1881-1968) was a Polish-American mathematician, a geometer in particular and author of the famous book ''College Geometry - An Introduction to the Modern Geometry of the Triangle and the Circle''. Biography Nathan Court was born on 22 January 1881, in Warsaw, Poland. He attended the ''University of Uege'' and the University of Ghent in Belgium where he received his D.Sc. in 1911. Soon after he came to the United States, he studied and taught at Columbia University. In 1912 he married ''Sophie Ravltch'', whom he had known in Warsaw. Dr. Court taught at the University of Washington and the University of Colorado before coming to the University of Oklahoma in 1918. In 1919, he became a U.S. citizen and changed his last name to Court, keeping Altshiller as a middle name. He became a full Professor at the University of Oklahoma in 1935 and retired in 1951. He died in Norman 20 July 1968. Major works * ''College Geometry - An Introduction to the Mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Danish Non-fiction Books
Danish may refer to: * Something of, from, or related to the country of Denmark People * A national or citizen of Denmark, also called a "Dane," see Demographics of Denmark * Culture of Denmark * Danish people or Danes, people with a Danish ancestral or ethnic identity * A member of the Danes, a Germanic tribe * Danish (name), a male given name and surname Language * Danish language, a North Germanic language used mostly in Denmark and Northern Germany * Danish tongue or Old Norse, the parent language of all North Germanic languages Food * Danish cuisine * Danish pastry, often simply called a "Danish" See also * Dane (other) * * Gdańsk * List of Danes * Languages of Denmark The Kingdom of Denmark has only one official language, Danish, the national language of the Danish people, but there are several minority languages spoken, namely Faroese, German, and Greenlandic. A large majority (about 86%) of Danes also s ... {{disambiguation Language a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1672 Books
Year 167 ( CLXVII) was a common year starting on Wednesday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Aurelius and Quadratus (or, less frequently, year 920 '' Ab urbe condita''). The denomination 167 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Roman Empire * Lucius Aurelius Verus Augustus and Marcus Ummidius Quadratus Annianus become Roman Consuls. * The Marcomanni tribe wages war against the Romans at Aquileia. They destroy aqueducts and irrigation conduits. Marcus Aurelius repels the invaders, ending the Pax Romana (Roman Peace) that has kept the Roman Empire free of conflict since the days of Emperor Augustus. * The Vandals (Astingi and Lacringi) and the Sarmatian Iazyges invade Dacia. To counter them, Legio V ''Macedonica'', returning from the Parthian War, moves it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
