Jenő Zsigmondy
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Jenő Zsigmondy
Jenő Zsigmondy (4 July 1888 – 30 July 1930), also known as Jenő von Zsigmondy (; hu, Zsigmondy Jenő, french: link=no, Eugène de Zsigmondy, 4 July 1889 – 30 July 1930) was a Hungarian tennis player who was one of Hungary's top players in the early 20th century. The Hungarian Tennis Championships, national champion in 1907, 1910 and 1911, he competed for Hungary at the 1908 Summer Olympics in London and the 1912 Summer Olympics in Stockholm. He was a member of Budapesti Lawn Tennis Club. Early life and family Jenő Zsigmondy was born in 1889, son of lawyer and Aulic Councillor Jenő Zsigmondy sr. a member of the famous Zsigmondy family and Matild Bartolovics. He had a sister Viola and a brother Dezső. His Cousin#First cousins once removed, first cousin twice removed was dentist Adolf Zsigmondy inventor of the Palmer notation, Zsigmondy cross. His Cousin#First cousins once removed, first cousin once removed, Adolf's son was Richard Adolf Zsigmondy a recipient of the ...
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Budapest
Budapest (, ; ) is the capital and most populous city of Hungary. It is the ninth-largest city in the European Union by population within city limits and the second-largest city on the Danube river; the city has an estimated population of 1,752,286 over a land area of about . Budapest, which is both a city and county, forms the centre of the Budapest metropolitan area, which has an area of and a population of 3,303,786; it is a primate city, constituting 33% of the population of Hungary. The history of Budapest began when an early Celtic settlement transformed into the Roman town of Aquincum, the capital of Lower Pannonia. The Hungarians arrived in the territory in the late 9th century, but the area was pillaged by the Mongols in 1241–42. Re-established Buda became one of the centres of Renaissance humanist culture by the 15th century. The Battle of Mohács, in 1526, was followed by nearly 150 years of Ottoman rule. After the reconquest of Buda in 1686, the ...
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Richard Adolf Zsigmondy
Richard Adolf Zsigmondy ( hu, Zsigmondy Richárd Adolf; 1 April 1865 – 23 September 1929) was an Austrian-born chemist. He was known for his research in colloids, for which he was awarded the Nobel Prize in chemistry in 1925, as well as for co-inventing the slit-ultramicroscope, and different membrane filters. The crater Zsigmondy on the Moon is named in his honour. Biography Early years Zsigmondy was born in Vienna, Austrian Empire, to a Hungarian gentry family. His mother Irma Szakmáry, a poet born in Martonvásár, and his father, Adolf Zsigmondy Sr., a scientist from Pressburg (Pozsony, today's Bratislava) who invented several surgical instruments for use in dentistry. Zsigmondy family members were Lutherans. They originated from Johannes ( hu, János) Sigmondi (1686–1746, Bártfa, Kingdom of Hungary) and included teachers, priests and Hungarian freedom-fighters. Richard was raised by his mother after his father's early death in 1880, and received a comprehensive e ...
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Algernon Kingscote
Algernon Robert Fitzhardinge "Algy" Kingscote (3 December 1888 – 21 December 1964) was a British tennis player, who won the Men's Singles event at the Australasian Championships in 1919. Kingscote also competed in the 1924 Summer Olympics in Paris. He was born in Bangalore, India, in 1888. Tennis career Algernon Kingscote learned playing tennis on the courts of the Château-d'Œx Club in Switzerland, where he won numerous championships. In his early years he trained with American teenager player R. Norris Williams.Tilden (1921), p. 189 He was crowned Swiss champion in 1908 and champion of Bengal in 1913. He held the Kent Championships title for four consecutive years between 1919–1922 and in total won the title six times. At Wimbledon 1919, Kingscote beat William Laurentz, Max Decugis and Pat O'Hara Wood before losing in the all comers final to Gerald Patterson. He won the singles title at the 1919 Australasian Championships, along with the first Anthony Wilding Memorial Me ...
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Arthur Gore (tennis)
Arthur William Charles Wentworth Gore (2 January 1868 – 1 December 1928) was a British tennis player. He is best known for winning three singles titles at the Wimbledon Championship and was runner-up a record 5 times (shared with Herbert Lawford). He also won gold medals at the 1908 Summer Olympics in London, England, winning the Men's Indoor Singles and the Men's Indoor Doubles (with Herbert Barrett). He also competed at the 1912 Summer Olympics in Stockholm, Sweden. Gore's Wimbledon win in 1909, at age 41, makes him the oldest player to date to hold the Wimbledon Gentlemen's Singles title. Career He played his first tournament at London Athletic Club in 1887, and his first title came at a grass court tournament in Stevenage in August 1888. Gore won the singles title at the Scottish Championships in 1892 and successfully defended the title in the Challenge Round in 1893. In 1894 he won the North London Championships on grass, an event at that tournament that he won five t ...
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Saint-Cloud
Saint-Cloud () is a commune in the western suburbs of Paris, France, from the centre of Paris. Like other communes of Hauts-de-Seine such as Marnes-la-Coquette, Neuilly-sur-Seine and Vaucresson, Saint-Cloud is one of France's wealthiest towns, with the second-highest average household income of communities with 10,000 to 50,000 households. In 2019, it had a population of 30,012. History The town is named after Clodoald, grandson of Clovis, who is supposed to have sought refuge in a hamlet on the Seine near Paris, then named Novigentum, like many other newly founded mercantile settlements outside the traditional towns. After he was canonized, the village where his tomb was located took the name of Sanctus Clodoaldus. A park contains the ruins of the Château de Saint-Cloud, built in 1572 and destroyed by fire in 1870 during the Franco-Prussian War. The château was the residence of several French rulers and served as the main country residence of the cadet Orléans line u ...
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World Hard Court Championships
World Hard Court Championships was an annual major tennis tournament sanctioned by the International Lawn Tennis Federation and held from 1912 to 1923. It was principally held in Paris, on clay courts of the Stade Français in the Paris suburb of Saint-Cloud, with one exception when they were held at the Royal Leopold Club in Brussels, Belgium, in 1922. The name of the event referred to its venues that were surfaced with clay, which at the time was customarily transcribed as "hard court" in English. It was open to all international amateur players from all nationalities, unlike the French Championships, which were open only to tennis players who were members of clubs in France through 1924; because of this the World Hard Court Championships is sometimes considered as the proper precursor to the French Open. The French Championships were also held at a different venue at the time, the Racing Club de France, Paris. At an annual general meeting held on 16 March 1923 in Paris, France ...
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Béla Von Kehrling
Béla von Kehrling ( hu, Kehrling Béla ; 25 January 1891 – 26 April 1937) was a Hungarian tennis, table tennis, and football player but eventually a winter sportsman familiar with ice-hockey and occasionally competing in bobsleigh. He competed at the 1912 Summer Olympics and the 1924 Summer Olympics. Career Kehrling like Fred Perry, he played both tennis and table tennis professionally. In 1926 he played in the first table tennis World Championships final in London with Zoltán Mechlovits in doubles but lost to Roland Jacobi (who won the singles title) and Dániel Pécsi. He was also featured in the Hungarian team that won gold in team competition. Originally he wasn't part of the national team. While the Hungarians unanimously swept all of the medals after Roland Jacobi's singles and doubles success he suddenly been reported of the death of his father thus he decided to travel home. The substitute player was Béla von Kehrling who had to beat Munio Pillinger of Austria ...
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Hungarian Parliament
The National Assembly ( hu, Országgyűlés, lit=Country Assembly) is the parliament of Hungary. The unicameral body consists of 199 (386 between 1990 and 2014) members elected to 4-year terms. Election of members is done using a semi-proportional representation: a mixed-member majoritarian representation with partial compensation via transfer votes and mixed single vote; involving single-member districts and one list vote; parties must win at least 5% of the popular vote in order to gain list seats assembly. The Assembly includes 25 standing committees to debate and report on introduced bills and to supervise the activities of the ministers. The Constitutional Court of Hungary has the right to challenge legislation on the grounds of constitutionality. The assembly has met in the Hungarian Parliament Building in Budapest since 1902. The current members are the members of the National Assembly of Hungary (2022–2026). History The Diet of Hungary ( hu, Országgyűlés) was ...
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Zsigmondy's Theorem
In number theory, Zsigmondy's theorem, named after Karl Zsigmondy, states that if a>b>0 are coprime integers, then for any integer n \ge 1, there is a prime number ''p'' (called a ''primitive prime divisor'') that divides a^n-b^n and does not divide a^k-b^k for any positive integer k1 and n is not equal to 6, then 2^n-1 has a prime divisor not dividing any 2^k-1 with k. Similarly, a^n+b^n has at least one primitive prime divisor with the exception 2^3+1^3=9. Zsigmondy's theorem is often useful, especially in group theory, where it is used to prove that various groups have distinct orders except when they are known to be the same.


History

The theorem was discovered by Zsigmondy working in from 1894 until 1925.


Generalizations

Let (a_n)_ be a sequence of nonzero integers. The Zs ...
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Karl Zsigmondy
Karl Zsigmondy () (27 March 1867 – 14 October 1925) was an Austrian mathematician of Hungarian ethnicity. He was a son of Adolf Zsigmondy from Pozsony, Kingdom of Hungary (now Bratislava, Slovakia) and his mother was Irma von Szakmáry of Martonvásár, Kingdom of Hungary. He studied (1886–1890) and worked (1894–1925) at the University of Vienna. After his PhD, in 1890, he studied at the University of Berlin, University of Göttingen and at the Sorbonne in Paris, but came back to Vienna in 1894. He discovered Zsigmondy's theorem in 1892. He was the brother of the mountain climber Emil Zsigmondy and the Nobel Laureate chemist Richard Adolf Zsigmondy Richard Adolf Zsigmondy ( hu, Zsigmondy Richárd Adolf; 1 April 1865 – 23 September 1929) was an Austrian-born chemist. He was known for his research in colloids, for which he was awarded the Nobel Prize in chemistry in 1925, as well as for c .... References * * External links * {{DEFAULTSORT:Zsigmondy, Karl ...
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