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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 ... [...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 ... [...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 Gdańsk ( , also ; ; csb, Gduńsk;Stefan Ramułt, ''Słownik języka pomorskiego, czyli kaszubskiego'', Kraków 1893, Gdańsk 2003, ISBN 83-87408-64-6. , Johann Georg Theodor Grässe, ''Orbis latinus oder Verzeichniss der lateinischen Benen ... * List of Danes * Languages of Denmark {{disambiguation Language and n ... [...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 Part ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gerald L
Gerald is a male Germanic given name meaning "rule of the spear" from the prefix ''ger-'' ("spear") and suffix ''-wald'' ("rule"). Variants include the English given name Jerrold, the feminine nickname Jeri and the Welsh language Gerallt and Irish language Gearalt. Gerald is less common as a surname. The name is also found in French as Gérald. Geraldine is the feminine equivalent. Given name People with the name Gerald include: Politicians * Gerald Boland, Ireland's longest-serving Minister for Justice * Gerald Ford, 38th President of the United States * Gerald Gardiner, Baron Gardiner, Lord Chancellor from 1964 to 1970 * Gerald Häfner, German MEP * Gerald Klug, Austrian politician * Gerald Lascelles (other), several people * Gerald Nabarro, British Conservative politician * Gerald S. McGowan, US Ambassador to Portugal * Gerald Wellesley, 7th Duke of Wellington, British diplomat, soldier, and architect Sports * Gerald Asamoah, Ghanaian-born German football player ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fry's Electronics
Fry's Electronics was an American big-box store chain. While operating, it was headquartered in San Jose, California in Silicon Valley. Fry's retailed software, consumer electronics, household appliances, cosmetics, tools, toys, accessories, magazines, technical books, snack foods, electronic components and computer hardware. Fry's had in-store computer repair and custom computer building services. Fry's began with one store in Sunnyvale, California and expanded to 34 stores in nine states at its peak in 2019. On February 24, 2021, Fry's announced the immediate and permanent closure of all of its stores. A statement posted on its website cited "changes in the retail industry and the challenges posed by the COVID-19 pandemic". History In 1972, Charles Fry sold the Fry's Supermarkets chain based in California for US$14 million to Dillons. He gave a portion of the proceeds, around $1 million, to each of his sons, John (who had worked as the IT manager for the supermark ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
German Language
German ( ) is a West Germanic language mainly spoken in Central Europe. It is the most widely spoken and official or co-official language in Germany, Austria, Switzerland, Liechtenstein, and the Italian province of South Tyrol. It is also a co-official language of Luxembourg and Belgium, as well as a national language in Namibia. Outside Germany, it is also spoken by German communities in France ( Bas-Rhin), Czech Republic (North Bohemia), Poland ( Upper Silesia), Slovakia (Bratislava Region), and Hungary ( Sopron). German is most similar to other languages within the West Germanic language branch, including Afrikaans, Dutch, English, the Frisian languages, Low German, Luxembourgish, Scots, and Yiddish. It also contains close similarities in vocabulary to some languages in the North Germanic group, such as Danish, Norwegian, and Swedish. German is the second most widely spoken Germanic language after English, which is also a West Germanic language. German ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isis (journal)
''Isis'' is a quarterly peer-reviewed academic journal published by the University of Chicago Press. It covers the history of science, history of medicine, and the history of technology, as well as their cultural influences. It contains original research articles and extensive book reviews and review essays. Furthermore, sections devoted to one particular topic are published in each issue in open access. These sections consist of the Focus section, the Viewpoint section and the Second Look section. History The journal was established by George Sarton and the first issue appeared in March 1913. Contributions were originally in any of four European languages (English, French, German, and Italian), but since the 1920s, only English has been used. Publication is partly supported by an endowment from the Dibner Fund. Two associated publications are ''Osiris'' (established 1936 by Sarton) and the ''Isis Current Bibliography''. The publication of the journal was interrupted in 1914 b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johannes Hjelmslev
Johannes Trolle Hjelmslev (; 7 April 1873 – 16 February 1950) was a mathematician from Hørning, Denmark. Hjelmslev worked in geometry and history of geometry. He was the discoverer and eponym of the Hjelmslev transformation, a method for mapping an entire hyperbolic plane into a circle with a finite radius. He was the father of Louis Hjelmslev. Originally named Johannes Trolle Petersen, he changed his patronymic to the surname Hjelmslev to avoid confusion with Julius Petersen Julius Peter Christian Petersen (16 June 1839, Sorø, West Zealand – 5 August 1910, Copenhagen) was a Danish mathematician. His contributions to the field of mathematics led to the birth of graph theory. Biography Petersen's interes .... Some of his results are known under his original name, including the Petersen–Morley theorem. Publications *Johannes Hjelmslev, ''Grundprinciper for den infinitesimale Descriptivgeometri med Anvendelse paa Læren om variable Figurer. Afhandling for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Danish Academy Of Sciences And Letters
{{Infobox organization , name = The Royal Danish Academy of Sciences and Letters , full_name = , native_name = Det Kongelige Danske Videnskabernes Selskab , native_name_lang = , logo = Royal Danish Academy of Sciences and Letters seal.svg , logo_size = 150 , logo_alt = , logo_caption = , image = Carlsbergfondet.JPG , image_size = , alt = , caption = The building on H.C. Andersens Boulevard. , map = , map_size = , map_alt = , map_caption = , map2 = , map2_size = , map2_alt = , map2_caption = , abbreviation = , nickname = , pronounce = , pronounce ref = , pronounce comment = , pronounce 2 = , named_after = , motto = , predecessor = , merged ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Mathematical Monthly
''The American Mathematical Monthly'' is a mathematical journal founded by Benjamin Finkel in 1894. It is published ten times each year by Taylor & Francis for the Mathematical Association of America. The ''American Mathematical Monthly'' is an expository journal intended for a wide audience of mathematicians, from undergraduate students to research professionals. Articles are chosen on the basis of their broad interest and reviewed and edited for quality of exposition as well as content. In this the ''American Mathematical Monthly'' fulfills a different role from that of typical mathematical research journals. The ''American Mathematical Monthly'' is the most widely read mathematics journal in the world according to records on JSTOR. Tables of contents with article abstracts from 1997–2010 are availablonline The MAA gives the Lester R. Ford Awards annually to "authors of articles of expository excellence" published in the ''American Mathematical Monthly''. Editors *2022� ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Florian Cajori
Florian Cajori (February 28, 1859 – August 14 or 15, 1930) was a Swiss-American historian of mathematics. Biography Florian Cajori was born in Zillis, Switzerland, as the son of Georg Cajori and Catherine Camenisch. He attended schools first in Zillis and later in Chur. In 1875, Florian Cajori emigrated to the United States at the age of sixteen, and attended the State Normal school in Whitewater, Wisconsin. After graduating in 1878, he taught in a country school, and then later began studying mathematics at University of Wisconsin–Madison. In 1883, Cajori received both his bachelor's and master's degrees from the University of Wisconsin–Madison, briefly attended Johns Hopkins University for 8 months in between degrees. He taught for a few years at Tulane University, before being appointed as professor of applied mathematics there in 1887. He was then driven north by tuberculosis. He founded the Colorado College Scientific Society and taught at Colorado College wher ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
