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Thomas Fantet De Lagny
Thomas Fantet de Lagny (7 November 1660 – 11 April 1734) was a French people, French mathematician, well known for his contributions to computational mathematics, and for calculating pi, π to 112 correct decimal places. Biography Thomas Fantet de Lagny was son of Pierre Fantet, a royal official in Grenoble, and Jeanne d'Azy, the daughter of a physician from Montpellier. He entered a Jesuit College in Lyon, where he became passionate about mathematics, as he studied some mathematical texts such as ''Euclid'' by Georges Fournier (Jesuit), Georges Fournier and an algebra text by Jacques Pelletier du Mans. Then he studied three years in the Faculty of Law in Toulouse. In 1686, he went to Paris and became a mathematics tutor to the Adrien Maurice de Noailles, Noailles family. He collaborated with Guillaume de l'Hôpital, de l'Hospital under the name of ''de Lagny'', and at that time he started publishing his first mathematical papers. He came back to Lyon when, on 11 December 169 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lyon
Lyon,, ; Occitan: ''Lion'', hist. ''Lionés'' also spelled in English as Lyons, is the third-largest city and second-largest metropolitan area of France. It is located at the confluence of the rivers Rhône and Saône, to the northwest of the French Alps, southeast of Paris, north of Marseille, southwest of Geneva, northeast of Saint-Étienne. The City of Lyon proper had a population of 522,969 in 2019 within its small municipal territory of , but together with its suburbs and exurbs the Lyon metropolitan area had a population of 2,280,845 that same year, the second most populated in France. Lyon and 58 suburban municipalities have formed since 2015 the Metropolis of Lyon, a directly elected metropolitan authority now in charge of most urban issues, with a population of 1,411,571 in 2019. Lyon is the prefecture of the Auvergne-Rhône-Alpes region and seat of the Departmental Council of Rhône (whose jurisdiction, however, no longer extends over the Metropolis of Lyo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jacques Pelletier Du Mans
Jacques Pelletier du Mans, also spelled Peletier ( la, Iacobus Peletarius Cenomani, 25 July 1517 – 17 July 1582) was a humanist, poet and mathematician of the French Renaissance. Born in Le Mans into a bourgeois family, he studied at the Collège de Navarre in Paris, where his brother Jean was a professor of mathematics and philosophy. He subsequently studied law and medicine, frequented the literary circle around Marguerite de Navarre and from 1541 to 1543 he was secretary to René du Bellay. In 1541 he published the first French translation of Horace's '' Ars Poetica'' and during this period he also published numerous scientific and mathematical treatises. In 1547 he produced a funeral oration for Henry VIII of England and published his first poems (''Œuvres poétiques''), which included translations from the first two cantos of Homer's ''Odyssey'' and the first book of Virgil's ''Georgics'', twelve Petrarchian sonnets, three Horacian odes and a Martial-like epigra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1734 Deaths
Events January– March * January 8 – Salzburgers, Lutherans who were expelled by the Roman Catholic Bishop of Salzburg, Austria, in October 1731, set sail for the British Colony of Georgia in America. * February 16 – The Ostend Company, established in 1722 in the Austrian Netherlands (modern-day Belgium) to compete for trade in the West Indies (the Caribbean islands) and the East Indies (south and southeast Asia), ceases business as part of the agreement by Austria in the Second Treaty of Vienna. * March 12 – Salzburgers arrive at the mouth of the Savannah River in the British Colony of Georgia. April–June * April 25 – Easter occurs on the latest possible date (the next time is in 1886). * May 15 – Prince Charles of Spain (later King Charles III) becomes the new King of Naples and Sicily, five days after his arrival in Naples. * May 25 – Spanish forces under the command of José Carrillo de Albornoz, 1st Duke of Mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1660 Births
Year 166 ( CLXVI) was a common year starting on Tuesday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Pudens and Pollio (or, less frequently, year 919 ''Ab urbe condita''). The denomination 166 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 * Dacia is invaded by barbarians. * Conflict erupts on the Danube frontier between Rome and the Germanic tribe of the Marcomanni. * Emperor Marcus Aurelius appoints his sons Commodus and Marcus Annius Verus as co-rulers (Caesar), while he and Lucius Verus travel to Germany. * End of the war with Parthia: The Parthians leave Armenia and eastern Mesopotamia, which both become Roman protectorates. * A plague (possibly small pox) comes from the East and spreads throughout the Roman Empire, lasting for roughly twenty years. * The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jurij Vega
Baron Jurij Bartolomej Vega (also Veha; la, Georgius Bartholomaei Vecha; german: Georg Freiherr von Vega; born ''Vehovec'', March 23, 1754 – September 26, 1802) was a Slovene mathematician, physicist and artillery officer. Early life Born to a farmer's family in the small village of Zagorica east of Ljubljana in Slovenia, Vega was 6 years old when his father Jernej Veha died. Vega was educated first in Moravče and later attended high school for six years (1767–1773) in Ljubljana (the Jesuit College of Ljubljana, '), studying Latin, Greek, religion, German, history, geography, science, and mathematics. At that time there were about 500 students there. He was a schoolfellow of Anton Tomaž Linhart, a Slovenian writer and historian. Vega finished high school when he was 19, in 1773. After completing his studies at the Lyceum of Ljubljana (Licej v Ljubljani) he became a navigational engineer in 1775. ''Tentamen philosophicum'', a list of questions for his comprehensiv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gregory's Series
Gregory's series, is an infinite Taylor series expansion of the inverse tangent function. It was discovered in 1668 by James Gregory. It was re-rediscovered a few years later by Gottfried Leibniz, who re obtained the Leibniz formula for π as the special case ''x'' = 1 of the Gregory series. The series The series is, : \int_0^x \, \frac = \arctan x = x - \frac + \frac - \frac + \cdots. Compare with the series for sine, which is similar but has factorials in the denominator. History The earliest person to whom the series can be attributed with confidence is Madhava of Sangamagrama (c. 1340 – c. 1425). The original reference (as with much of Madhava's work) is lost, but he is credited with the discovery by several of his successors in the Kerala school of astronomy and mathematics founded by him. Specific citations to the series for arctanθ include Nilakantha Somayaji's Tantrasangraha (c. 1500), Jyeṣṭhadeva's ''Yuktibhāṣā'' (c. 1530), and the ''Yukti-dipik ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alexander Chalmers' General Biographical Dictionary
The ''General Biographical Dictionary'' was a bestselling book of the early 19th century, compiled by British author Alexander Chalmers. It is the work on which Chalmers' fame as a biographer mainly rests. Background The ''Dictionary'' was an enlarged edition of the ''New and General Biographical Dictionary'', which was first published in eleven volumes in 1761. Other editions of this compilation appeared in 1784 and in 1798–1810. The latter, in fifteen volumes, was edited (first five) by William Tooke, and (last ten) by Archdeacon Nares and William Beloe. Then Chalmers's edition had as full title ''The General Biographical Dictionary: containing an historical and critical account of the lives and writings of the most eminent persons in every nation, particularly the British and Irish, from the earliest accounts to the present time''. The first four volumes of this work, in octavo, were published monthly, commencing in May 1812, and then a volume appeared every alternate month t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pierre Varignon
Pierre Varignon (1654 – 23 December 1722) was a French mathematician. He was educated at the Jesuit College and the University of Caen, where he received his M.A. in 1682. He took Holy Orders the following year. Varignon gained his first exposure to mathematics by reading Euclid and then Descartes' ''La Géométrie''. He became professor of mathematics at the Collège Mazarin in Paris in 1688 and was elected to the Académie Royale des Sciences in the same year. In 1704 he held the departmental chair at Collège Mazarin and also became professor of mathematics at the Collège Royal. He was elected to the Berlin Academy in 1713 and to the Royal Society in 1718. Many of his works were published in Paris in 1725, three years after his death. His lectures at Mazarin were published in Elements de mathematique' in 1731. Varignon was a friend of Newton, Leibniz, and the Bernoulli family. Varignon's principal contributions were to graphic statics and mechanics. Except for l'H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rochefort, Charente-Maritime
Rochefort ( oc, Ròchafòrt), unofficially Rochefort-sur-Mer (; oc, Ròchafòrt de Mar, link=no) for disambiguation, is a city and communes of France, commune in Southwestern France, a port on the Charente (river), Charente estuary. It is a Subprefectures in France, subprefecture of the Charente-Maritime Departments of France, department, located in the administrative regions of France, administrative region of Nouvelle-Aquitaine (before 2015: Poitou-Charentes). In 2018, it had a population of 23,583. Geography Rochefort lies on the river Charente (river), Charente, close to its outflow into the Atlantic Ocean. It is about 30 km southeast of La Rochelle. Rochefort station has rail connections to La Rochelle, Nantes and Bordeaux. History In December 1665, Rochefort was chosen by Jean-Baptiste Colbert as a place of "refuge, defence and supply" for the French Navy. The Arsenal de Rochefort served as a naval base and dockyard until it closed in 1926. In September 1757, Rochefor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrography
Hydrography is the branch of applied sciences which deals with the measurement and description of the physical features of oceans, seas, coastal areas, lakes and rivers, as well as with the prediction of their change over time, for the primary purpose of safety of navigation and in support of all other marine activities, including economic development, security and defense, scientific research, and environmental protection. History The origins of hydrography lay in the making of charts to aid navigation, by individual mariners as they navigated into new waters. These were usually the private property, even closely held secrets, of individuals who used them for commercial or military advantage. As transoceanic trade and exploration increased, hydrographic surveys started to be carried out as an exercise in their own right, and the commissioning of surveys was increasingly done by governments and special hydrographic offices. National organizations, particularly navies, realized ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guillaume De L'Hôpital
Guillaume François Antoine, Marquis de l'Hôpital (; sometimes spelled L'Hospital; 1661 – 2 February 1704), also known as Guillaume-François-Antoine Marquis de l'Hôpital, Marquis de Sainte-Mesme, Comte d'Entremont, and Seigneur d'Ouques-la-Chaise, was a French mathematician. His name is firmly associated with l'Hôpital's rule for calculating limits involving indeterminate forms 0/0 and ∞/∞. Although the rule did not originate with l'Hôpital, it appeared in print for the first time in his 1696 treatise on the infinitesimal calculus, entitled ''Analyse des Infiniment Petits pour l'Intelligence des Lignes Courbes''. This book was a first systematic exposition of differential calculus. Several editions and translations to other languages were published and it became a model for subsequent treatments of calculus. Biography L'Hôpital was born into a military family. His father was Anne-Alexandre de l'Hôpital, a Lieutenant-General of the King's army, Comte de Saint-Me ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toulouse
Toulouse ( , ; oc, Tolosa ) is the prefecture of the French department of Haute-Garonne and of the larger region of Occitania. The city is on the banks of the River Garonne, from the Mediterranean Sea, from the Atlantic Ocean and from Paris. It is the fourth-largest city in France after Paris, Marseille and Lyon, with 493,465 inhabitants within its municipal boundaries (2019 census); its metropolitan area has a population of 1,454,158 inhabitants (2019 census). Toulouse is the central city of one of the 20 French Métropoles, with one of the three strongest demographic growth (2013-2019). Toulouse is the centre of the European aerospace industry, with the headquarters of Airbus, the SPOT satellite system, ATR and the Aerospace Valley. It hosts the CNES's Toulouse Space Centre (CST) which is the largest national space centre in Europe, but also, on the military side, the newly created NATO space centre of excellence and the French Space Command and Space Academy. Thales ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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