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Victor Thébault
Victor Michael Jean-Marie Thébault (1882–1960) was a French mathematician best known for propounding three problems in geometry. The name Thébault's theorem is used by some authors to refer to the first of these problems and by others to refer to the third. Thébault was born on March 6, 1882, in Ambrières-les-Grand (today a part of Ambrières-les-Vallées, Mayenne) in the northwest of France. He got his education at a teacher's college in Laval, where he studied from 1898 to 1901. After his graduation he taught for three years at Pré-en-Pail until he got a professorship at technical school in Ernée. In 1909 he placed first in a competitive exams, which yielded him a certificate to work as a science professor at teachers' colleges. Thébault however found a professor's salary insufficient to support his large family and hence he left teaching to become a factory superintendent at Ernée from 1910 to 1923. In 1924 he became a chief insurance inspector in Le Mans, a position ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mathematician
A mathematician is someone who uses an extensive knowledge of mathematics in their work, typically to solve mathematical problems. Mathematicians are concerned with numbers, data, quantity, structure, space, models, and change. History One of the earliest known mathematicians were Thales of Miletus (c. 624–c.546 BC); he has been hailed as the first true mathematician and the first known individual to whom a mathematical discovery has been attributed. He is credited with the first use of deductive reasoning applied to geometry, by deriving four corollaries to Thales' Theorem. The number of known mathematicians grew when Pythagoras of Samos (c. 582–c. 507 BC) established the Pythagorean School, whose doctrine it was that mathematics ruled the universe and whose motto was "All is number". It was the Pythagoreans who coined the term "mathematics", and with whom the study of mathematics for its own sake begins. The first woman mathematician recorded by history was Hypati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geometry
Geometry (; ) is, with arithmetic, one of the oldest branches of mathematics. It is concerned with properties of space such as the distance, shape, size, and relative position of figures. A mathematician who works in the field of geometry is called a ''geometer''. Until the 19th century, geometry was almost exclusively devoted to Euclidean geometry, which includes the notions of point, line, plane, distance, angle, surface, and curve, as fundamental concepts. During the 19th century several discoveries enlarged dramatically the scope of geometry. One of the oldest such discoveries is Carl Friedrich Gauss' ("remarkable theorem") that asserts roughly that the Gaussian curvature of a surface is independent from any specific embedding in a Euclidean space. This implies that surfaces can be studied ''intrinsically'', that is, as stand-alone spaces, and has been expanded into the theory of manifolds and Riemannian geometry. Later in the 19th century, it appeared that geometries ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thébault's Theorem
Thébault's theorem is the name given variously to one of the geometry problems proposed by the French mathematician Victor Thébault, individually known as Thébault's problem I, II, and III. Thébault's problem I Given any parallelogram, construct on its sides four squares external to the parallelogram. The quadrilateral formed by joining the centers of those four squares is a square. It is a special case of van Aubel's theorem and a square version of the Napoleon's theorem. Thébault's problem II Given a square, construct equilateral triangles on two adjacent edges, either both inside or both outside the square. Then the triangle formed by joining the vertex of the square distant from both triangles and the vertices of the triangles distant from the square is equilateral. Thébault's problem III Given any triangle ABC, and any point M on BC, construct the incircle and circumcircle of the triangle. Then construct two additional circles, each tangent to AM, BC ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ambrières-les-Vallées
Ambrières-les-Vallées () is a commune in the Mayenne department in northwestern France. It is on the border of Normandy. Population Notable people * Louis Tanquerel des Planches (1810–1862), physician and researcher See also *Communes of Mayenne *Parc naturel régional Normandie-Maine Normandie-Maine Regional Natural Park ( Fr.: ''Parc naturel régional Normandie-Maine'') is a protected area of forest and bocage located in the French regions of Normandy and Pays de la Loire. Geography Spanning the departments of Orne, Manch ... References Communes of Mayenne {{Mayenne-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mayenne
Mayenne () is a landlocked department in northwest France named after the river Mayenne. Mayenne is part of the administrative region of Pays de la Loire and is surrounded by the departments of Manche, Orne, Sarthe, Maine-et-Loire, and Ille-et-Vilaine. Mayenne is one of the original 83 departments created during the French Revolution on 4 March 1790. The northern two thirds correspond to the western part of the former province of Maine. The southern third of Mayenne corresponds to the northern portion of the old province of Anjou. The inhabitants of the department are called ''Mayennais''. It had a population of 307,062 in 2019.Populations légales 2019: 53 Mayenne INSEE History Like 82 other departments, Mayenne was created on 4 March 1790 during the early stages of the ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laval, Mayenne
Laval () is a town in western France, about west-southwest of Paris, and the capital of the Mayenne department. Its inhabitants are called ''Lavallois''. The commune of Laval proper, without the metropolitan area, is the 7th most populous in the Pays de la Loire region and the 132nd in France.Téléchargement du fichier d'ensemble des populations légales en 2017 INSEE A part of the traditional of |
Pré-en-Pail
Pré-en-Pail () is a former commune in the Mayenne department in north-western France. On 1 January 2016, it was merged into the new commune of Pré-en-Pail-Saint-Samson. 4 December 2015 See also * *Parc naturel régional Normandie-Maine
Normandie-Maine Regional Natural Park ( Fr.: ''Parc naturel régional Normandie-Maine'') is a protected area of forest and bocage located in the French regions of Normandy and Pays de la L ...
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Ernée
Ernée () is a commune in the Mayenne department in north-western France. It is named after the river Ernée, which runs through the town and is situated about halfway between the towns of Laval and Fougères. Ernée is home to a purpose-built motocross track, which has been used in the Motocross World Championships and Motocross des Nations. Neighboring communes The commune is bordered by the communes of Montenay, Saint-Pierre-des-Landes, Vautorte, La Pellerine, Saint-Hilaire-du-Maine, Saint-Denis-de-Gastines. Population International relations Ernée is twinned with: * Glenfield, England * Dorsten, Germany See also *Communes of the Mayenne department The following is a list of the 240 communes of the Mayenne department of France. The communes cooperate in the following intercommunalities (as of 2020): [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Le Mans
Le Mans (, ) is a city in northwestern France on the Sarthe River where it meets the Huisne. Traditionally the capital of the province of Maine, it is now the capital of the Sarthe department and the seat of the Roman Catholic diocese of Le Mans. Le Mans is a part of the Pays de la Loire region. Its inhabitants are called ''Manceaux'' (male) and ''Mancelles'' (female). Since 1923, the city has hosted the 24 Hours of Le Mans, the world's oldest active endurance sports car race. History First mentioned by Claudius Ptolemy, the Roman city ''Vindinium'' was the capital of the Aulerci, a sub tribe of the Aedui. Le Mans is also known as ''Civitas Cenomanorum'' (City of the Cenomani), or ''Cenomanus''. Their city, seized by the Romans in 47 BC, was within the ancient Roman province of Gallia Lugdunensis. A 3rd-century amphitheatre is still visible. The ''thermae'' were demolished during the crisis of the third century when workers were mobilized to build the city's defensive walls ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tennie
Tennie () is a commune in the Sarthe department in the region of Pays de la Loire in north-western France. Geography The village lies in the middle of the commune, on the left bank of the Vègre, which flows southwestward through the commune. See also *Communes of the Sarthe department The following is a list of the 354 communes of the Sarthe department of France. The communes cooperate in the following intercommunalities (as of 2020):Communes of Sarthe {{Sarthe-geo-stub ... [...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] |
1882 Births
Year 188 (CLXXXVIII) was a leap year starting on Monday of the Julian calendar. At the time, it was known in the Roman Empire as the Year of the Consulship of Fuscianus and Silanus (or, less frequently, year 941 ''Ab urbe condita''). The denomination 188 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 * Publius Helvius Pertinax becomes pro-consul of Africa from 188 to 189. Japan * Queen Himiko (or Shingi Waō) begins her reign in Japan (until 248). Births * April 4 – Caracalla (or Antoninus), Roman emperor (d. 217) * Lu Ji (or Gongji), Chinese official and politician (d. 219) * Sun Shao, Chinese general of the Eastern Wu state (d. 241) Deaths * March 17 – Julian, pope and patriarch of Alexandria * Fa Zhen (or Gaoqing), Chinese scholar (b. AD 100) * Lucius Antistius Burrus, Roman politician (executed) * Ma Xiang, Chi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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