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Maurice Kraitchik
Maurice Borisovich Kraitchik (21 April 1882 – 19 August 1957) was a Belgian mathematician and populariser. His main interests were the theory of numbers and recreational mathematics. He was born to a Jewish family in Minsk. He wrote several books on number theory during 1922–1930 and after the war, and from 1931 to 1939 edited ''Sphinx'', a periodical devoted to recreational mathematics. During World War II, he emigrated to the United States, where he taught a course at the New School for Social Research in New York City on the general topic of "mathematical recreations." Kraïtchik was ''agrégé'' of the Free University of Brussels, engineer at the Société Financière de Transports et d'Entreprises Industrielles (Sofina), and director of the Institut des Hautes Etudes de Belgique. He died in Brussels. Kraïtchik is famous for having inspired the two envelopes problem The two envelopes problem, also known as the exchange paradox, is a paradox in probability theory. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Picone Franel Dandliker Kraitchik Kollros Wolff Straszewicz Zurich1932
Salvatore Ficarra (born 27 May 1971, in Palermo) and Valentino Picone (born 23 March 1971, in Palermo) are an Italian comedy duo who work on stage, films, television and books as Ficarra e Picone. Life and career They started in 1993 along with Salvatore Borrello as a comedy trio, performing together on stage as "Chiamata Urbana Urgente". In 1998, the two remaining members began to use their surnames: Ficarra & Picone. In 2000, Ficarra e Picone made their film debut with '' Ask Me If I'm Happy'' by Aldo, Giovanni & Giacomo, and two years later they made the first film as main actors, ''Nati stanchi''. On 25 April 2005, ficarra and Picone were the TV anchor-men four episodes of '' Striscia la notizia'' to which they collaborated from 27 March 2006 up to 5 December 2020. In 2007 they debuted as directors alongside Gianbattista Avellino with the film ''Il 7 e l'8'', for which they were nominated to David di Donatello for Best New Director and to Silver Ribbon in the same cate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sofina
Sofina, ''Société Financière de Transports et d'Entreprises Industrielles'', is a Belgian holding company, headquartered in Brussels with offices in Singapore. As part of the Bel20 index, it is one of the twenty largest capitalisation in Belgium. The company invests in several industrial sectors such as telecommunication (7%), portfolio companies, banks and insurance (6%), private equity (6%), services within the company (18%), consumer goods (31%), energy (6%), food distribution (8%) and various other sectors (10%). Geographically, Sofina has investments located in Belgium, France, Luxembourg, the Netherlands, the United Kingdom, India and North America. History The company was founded in 1898. It was led from 1905 until 1955 by the Belgian-American engineer of German origin Dannie Heineman (1872-1962). Historically, the company owned the Anglo-Argentine Tramways Company, which was one of the largest tram operators in the world at the time. From 1955 on, the current famil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Belarusian Jews
The history of the Jews in Belarus begins as early as the 8th century. Jews lived in all parts of the lands of modern Belarus. Jews were the third largest ethnic group in the country in the first half of the 20th century. In 1897, the Jewish population of Belarus reached 910,900, or 14.2% of the total population. Following the Polish-Soviet War (1919-1920), under the terms of the Treaty of Riga, Belarus was split into Eastern Belorussia (under Soviet occupation) and Western Belorussia (under Polish occupation), and causing 350,000-450,000 of the Jews to be governed by Poland. Prior to World War II, Jews remained the third largest ethnic group in Belarus and comprised more than 40% of the population in cities and towns. The population of cities such as Minsk, Pinsk, Mahiliou, Babrujsk, Viciebsk, and Homiel was more than 50% Jewish. In 1926 and 1939 there were between 375,000 and 407,000 Jews in Belarus (Eastern Belorussia) or 6.7-8.2% of the total population. Following the S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Belgian Mathematicians
Belgian may refer to: * Something of, or related to, Belgium * Belgians, people from Belgium or of Belgian descent * Languages of Belgium, languages spoken in Belgium, such as Dutch, French, and German * Ancient Belgian language, an extinct language formerly spoken in Gallia Belgica * Belgian Dutch or Flemish, a variant of Dutch *Belgian French, a variant of French * Belgian horse (other), various breeds of horse * Belgian waffle, in culinary contexts * SS ''Belgian'', a cargo ship in service with F Leyland & Co Ltd from 1919 to 1934 *''The Belgian ''The Belgian'' is a 1917 American silent film directed by Sidney Olcott and produced by Sidney Olcott Players with Valentine Grant and Walker Whiteside in the leading roles. It is not known whether the film currently survives. Plot As descr ...'', a 1917 American silent film See also * * Belgica (other) * Belgic (other) {{Disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mathematics Popularizers
Mathematics is an area of knowledge that includes the topics of numbers, formulas and related structures, shapes and the spaces in which they are contained, and quantities and their changes. These topics are represented in modern mathematics with the major subdisciplines of number theory, algebra, geometry, and analysis, respectively. There is no general consensus among mathematicians about a common definition for their academic discipline. Most mathematical activity involves the discovery of properties of abstract objects and the use of pure reason to prove them. These objects consist of either abstractions from nature orin modern mathematicsentities that are stipulated to have certain properties, called axioms. A ''proof'' consists of a succession of applications of deductive rules to already established results. These results include previously proved theorems, axioms, andin case of abstraction from naturesome basic properties that are considered true starting points of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Recreational Mathematicians
Recreation is an activity of leisure, leisure being discretionary time. The "need to do something for recreation" is an essential element of human biology and psychology. Recreational activities are often done for enjoyment, amusement, or pleasure and are considered to be "fun". Etymology The term ''recreation'' appears to have been used in English first in the late 14th century, first in the sense of "refreshment or curing of a sick person", and derived turn from Latin (''re'': "again", ''creare'': "to create, bring forth, beget"). Prerequisites to leisure People spend their time on activities of daily living, work, sleep, social duties and leisure, the latter time being free from prior commitments to physiologic or social needs, a prerequisite of recreation. Leisure has increased with increased longevity and, for many, with decreased hours spent for physical and economic survival, yet others argue that time pressure has increased for modern people, as they are committed to too ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1957 Deaths
1957 (Roman numerals, MCMLVII) was a Common year starting on Wednesday, common year starting on Tuesday of the Gregorian calendar, the 1957th year of the Common Era (CE) and ''Anno Domini'' (AD) designations, the 957th year of the 2nd millennium, the 57th year of the 20th century, and the 8th year of the 1950s decade. Events January * January 1 – The Saarland joins West Germany. * January 3 – Hamilton Watch Company introduces the first electric watch. * January 5 – South African player Russell Endean becomes the first batsman to be Dismissal (cricket), dismissed for having ''handled the ball'', in Test cricket. * January 9 – British Prime Minister Anthony Eden resigns. * January 10 – Harold Macmillan becomes Prime Minister of the United Kingdom. * January 11 – The African Convention is founded in Dakar. * January 14 – Kripalu Maharaj is named fifth Jagadguru (world teacher), after giving seven days of speeches before 500 Hindu scholars. * January 15 – The film ' ... [...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] |
Two Envelopes Problem
The two envelopes problem, also known as the exchange paradox, is a paradox in probability theory. It is of special interest in decision theory, and for the Bayesian interpretation of probability theory. It is a variant of an older problem known as the necktie paradox. The problem is typically introduced by formulating a hypothetical challenge like the following example: Since the situation is symmetric, it seems obvious that there is no point in switching envelopes. On the other hand, a simple calculation using expected values suggests the opposite conclusion, that it is always beneficial to swap envelopes, since the person stands to gain twice as much money if they switch, while the only risk is halving what they currently have. Introduction Problem Basic setup: A person is given two indistinguishable envelopes, each of which contains a sum of money. One envelope contains twice as much as the other. The person may pick one envelope and keep whatever amount it contains. They ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brussels
Brussels (french: Bruxelles or ; nl, Brussel ), officially the Brussels-Capital Region (All text and all but one graphic show the English name as Brussels-Capital Region.) (french: link=no, Région de Bruxelles-Capitale; nl, link=no, Brussels Hoofdstedelijk Gewest), is a region of Belgium comprising 19 municipalities, including the City of Brussels, which is the capital of Belgium. The Brussels-Capital Region is located in the central portion of the country and is a part of both the French Community of Belgium and the Flemish Community, but is separate from the Flemish Region (within which it forms an enclave) and the Walloon Region. Brussels is the most densely populated region in Belgium, and although it has the highest GDP per capita, it has the lowest available income per household. The Brussels Region covers , a relatively small area compared to the two other regions, and has a population of over 1.2 million. The five times larger metropolitan area of Brusse ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Institut Des Hautes Etudes De Belgique
An institute is an organisational body created for a certain purpose. They are often research organisations (research institutes) created to do research on specific topics, or can also be a professional body. In some countries, institutes can be part of a university or other institutions of higher education, either as a group of departments or an autonomous educational institution without a traditional university status such as a "university institute" (see Institute of Technology). In some countries, such as South Korea and India, private schools are sometimes referred to as institutes, and in Spain, secondary schools are referred to as institutes. Historically, in some countries institutes were educational units imparting vocational training and often incorporating libraries, also known as mechanics' institutes. The word "institute" comes from a Latin word ''institutum'' meaning "facility" or "habit"; from ''instituere'' meaning "build", "create", "raise" or "educate". ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
