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Serge Cantat
Serge Marc Cantat (born 3 June 1973, in Paris) is a French mathematician, specializing in geometry and dynamical systems. Cantat received his PhD under the supervision of Étienne Ghys in 1999 at the École normale supérieure de Lyon. Cantat is a directeur de recherche of CNRS at the Institut de recherches mathématiques de Rennes (University of Rennes 1). He was previously directeur de recherche of CNRS at ENS Paris. His research deals with complex dynamics and dynamics of automorphisms of algebraic surfaces. He examined the algebraic structure of Cremona groups (''i.e.'' groups of birational automorphisms of n-dimensional projective spaces over a field k) and showed with Stéphane Lamy that for an algebraically closed field k and for dimension n=2 the Cremona group \mathrm(\mathbb^n(k)) is not a simple group. In particular, if k is the field of complex numbers and n=2, the Cremona group contains an infinite non-countable family of different normal subgroups. In 2018, Ca ...
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Paris
Paris () is the capital and most populous city of France, with an estimated population of 2,165,423 residents in 2019 in an area of more than 105 km² (41 sq mi), making it the 30th most densely populated city in the world in 2020. Since the 17th century, Paris has been one of the world's major centres of finance, diplomacy, commerce, fashion, gastronomy, and science. For its leading role in the arts and sciences, as well as its very early system of street lighting, in the 19th century it became known as "the City of Light". Like London, prior to the Second World War, it was also sometimes called the capital of the world. The City of Paris is the centre of the Île-de-France region, or Paris Region, with an estimated population of 12,262,544 in 2019, or about 19% of the population of France, making the region France's primate city. The Paris Region had a GDP of €739 billion ($743 billion) in 2019, which is the highest in Europe. According to the Economist Intelli ...
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International Congress Of Mathematicians
The International Congress of Mathematicians (ICM) is the largest conference for the topic of mathematics. It meets once every four years, hosted by the International Mathematical Union (IMU). The Fields Medals, the Nevanlinna Prize (to be renamed as the IMU Abacus Medal), the Carl Friedrich Gauss Prize, Gauss Prize, and the Chern Medal are awarded during the congress's opening ceremony. Each congress is memorialized by a printed set of Proceedings recording academic papers based on invited talks intended to be relevant to current topics of general interest. Being List of International Congresses of Mathematicians Plenary and Invited Speakers, invited to talk at the ICM has been called "the equivalent ... of an induction to a hall of fame". History Felix Klein and Georg Cantor are credited with putting forward the idea of an international congress of mathematicians in the 1890s.A. John Coleman"Mathematics without borders": a book review ''CMS Notes'', vol 31, no. 3, April 1999 ...
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1973 Births
Events January * January 1 - The United Kingdom, the Republic of Ireland and Denmark 1973 enlargement of the European Communities, enter the European Economic Community, which later becomes the European Union. * January 15 – Vietnam War: Citing progress in peace negotiations, U.S. President Richard Nixon announces the suspension of offensive action in North Vietnam. * January 17 – Ferdinand Marcos becomes President for Life of the Philippines. * January 20 – Richard Nixon is Second inauguration of Richard Nixon, sworn in for a second term as President of the United States. Nixon is the only person to have been sworn in twice as President (First inauguration of Richard Nixon, 1969, Second inauguration of Richard Nixon, 1973) and Vice President of the United States (First inauguration of Dwight D. Eisenhower, 1953, Second inauguration of Dwight D. Eisenhower, 1957). * January 22 ** George Foreman defeats Joe Frazier to win the heavyweight world boxing championship. ** A ...
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21st-century French Mathematicians
The 1st century was the century spanning AD 1 ( I) through AD 100 ( C) according to the Julian calendar. It is often written as the or to distinguish it from the 1st century BC (or BCE) which preceded it. The 1st century is considered part of the Classical era, epoch, or historical period. The 1st century also saw the appearance of Christianity. During this period, Europe, North Africa and the Near East fell under increasing domination by the Roman Empire, which continued expanding, most notably conquering Britain under the emperor Claudius ( AD 43). The reforms introduced by Augustus during his long reign stabilized the empire after the turmoil of the previous century's civil wars. Later in the century the Julio-Claudian dynasty, which had been founded by Augustus, came to an end with the suicide of Nero in AD 68. There followed the famous Year of Four Emperors, a brief period of civil war and instability, which was finally brought to an end by Vespasian, ninth Roman emper ...
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Igor Dolgachev
Igor V. Dolgachev (born 7 April 1944) is a Russian–American mathematician specializing in algebraic geometry. He has been a professor at the University of Michigan since 1978. He introduced Dolgachev surfaces in 1981. Dolgachev completed his Ph.D. at Moscow State University M. V. Lomonosov Moscow State University (MSU; russian: Московский государственный университет имени М. В. Ломоносова) is a public research university in Moscow, Russia and the most prestigious ... in 1970, under the supervision of Igor Shafarevich. References External links *Dolgachev's website at University of Michigan 1944 births Living people 20th-century American mathematicians 21st-century American mathematicians Algebraic geometers University of Michigan faculty Russian mathematicians Moscow State University alumni Soviet mathematicians {{Russia-mathematician-stub ...
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Vincent Guedj
Vincent ( la, Vincentius) is a male given name derived from the Roman name Vincentius, which is derived from the Latin word (''to conquer''). People with the given name Artists *Vincent Apap (1909–2003), Maltese sculptor *Vincent van Gogh (1853–1890), Dutch Post-Impressionist painter *Vincent Munier (born 1976), French wildlife photographer Saints *Vincent of Saragossa (died 304), deacon and martyr, patron saint of Lisbon and Valencia *Vincent, Orontius, and Victor (died 305), martyrs who evangelized in the Pyrenees * Vincent of Digne (died 379), French bishop of Digne *Vincent of Lérins (died 445), Church father, Gallic author of early Christian writings *Vincent Madelgarius (died 677), Benedictine monk who established two monasteries in France *Vincent Ferrer (1350–1419), Valencian Dominican missionary and logician *Vincent de Paul (1581–1660), Catholic priest who served the poor *Vicente Liem de la Paz (Vincent Liem the Nguyen, 1732–1773), Vincent Duong, Vince ...
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Antoine Chambert-Loir
Antoine is a French given name (from the Latin '' Antonius'' meaning 'highly praise-worthy') that is a variant of Danton, Titouan, D'Anton and Antonin. The name is used in France, Switzerland, Belgium, Canada, West Greenland, Haiti, French Guiana, Madagascar, Benin, Niger, Burkina Faso, Ivory Coast, Guinea, Senegal, Mauritania, Western Sahara, Morocco, Algeria, Tunisia, Chad, Central African Republic, Cameroon, Equatorial Guinea, Gabon, Republic of the Congo, Democratic Republic of the Congo, Burundi, and Rwanda. It is a cognate of the masculine given name Anthony. Similar names include Antaine, Anthoine, Antoan, Antoin, Antton, Antuan, Antwain, Antwan, Antwaun, Antwoine, Antwone, Antwon and Antwuan. Feminine forms include Antonia, Antoinette, and (more rarely) Antionette. As a first name * Antoine Alexandre Barbier (1765–1825), a French librarian and bibliographer * Antoine Arbogast (1759–1803), a French mathematician *Antoine Arnauld (1612–1694), a French theologi ...
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Kraków
Kraków (), or Cracow, is the second-largest and one of the oldest cities in Poland. Situated on the Vistula River in Lesser Poland Voivodeship, the city dates back to the seventh century. Kraków was the official capital of Poland until 1596 and has traditionally been one of the leading centres of Polish academic, economic, cultural and artistic life. Cited as one of Europe's most beautiful cities, its Old Town with Wawel Royal Castle was declared a UNESCO World Heritage Site in 1978, one of the first 12 sites granted the status. The city has grown from a Stone Age settlement to Poland's second-most-important city. It began as a hamlet on Wawel Hill and was reported by Ibrahim Ibn Yakoub, a merchant from Cordoba, as a busy trading centre of Central Europe in 985. With the establishment of new universities and cultural venues at the emergence of the Second Polish Republic in 1918 and throughout the 20th century, Kraków reaffirmed its role as a major national academic and a ...
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European Congress Of Mathematics
The European Congress of Mathematics (ECM) is the second largest international conference of the mathematics community, after the International Congresses of Mathematicians (ICM). The ECM are held every four years and are timed precisely between the ICM. The ECM is held under the auspices of the European Mathematical Society (EMS), and was one of its earliest initiatives. It was founded by Max Karoubi and the first edition took place in Paris in 1992. Its objectives are "to present various new aspects of pure and applied mathematics to a wide audience, to be a forum for discussion of the relationship between mathematics and society in Europe, and to enhance cooperation among mathematicians from all European countries." Activities The Congresses generally last a week and consist of plenary lectures, parallel (invited) lectures and several mini-symposia devoted to a particular subject, where participants can contribute with posters and short talks. Many editions featured also s ...
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Prix Paul Doistau–Émile Blutet
The Prix Paul Doistau–Émile Blutet is a biennial prize awarded by the French Academy of Sciences in the fields of mathematics and physical sciences since 1954. Each recipient receives 3000 euros. The prize is also awarded quadrennially in biology. The award is also occasionally awarded in other disciplines. List of laureates Mathematics * 1958 Marc Krasner * 1980 Jean-Michel Bony * 1982 Jean-Pierre Ramis * 1982 Gérard Maugin * 1985 Dominique Foata * 1986 Pierre-Louis Lions * 1987 Pierre Bérard * 1987 Lucien Szpiro * 1999 Wendelin Werner * 2001 Hélène Esnault * 2004 Laurent Stolovitch * 2006 Alice Guionnet * 2008 Isabelle Gallagher * 2010 Yves André * 2012 Serge Cantat * 2014 Sébastien Boucksom * 2016 Hajer Bahouri * 2018 Physical sciences * 2002 * 2005 Mustapha Besbes * 2007 * 2009 Hasnaa Chennaoui-Aoudjehane * 2011 Henri-Claude Nataf * 2013 * 2015 Philippe André * 2019 Integrative biology * 2000 Jérôme Giraudat * 2004 Marie-Claire Verdus ...
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Normal Subgroup
In abstract algebra, a normal subgroup (also known as an invariant subgroup or self-conjugate subgroup) is a subgroup that is invariant under conjugation by members of the group of which it is a part. In other words, a subgroup N of the group G is normal in G if and only if gng^ \in N for all g \in G and n \in N. The usual notation for this relation is N \triangleleft G. Normal subgroups are important because they (and only they) can be used to construct quotient groups of the given group. Furthermore, the normal subgroups of G are precisely the kernels of group homomorphisms with domain G, which means that they can be used to internally classify those homomorphisms. Évariste Galois was the first to realize the importance of the existence of normal subgroups. Definitions A subgroup N of a group G is called a normal subgroup of G if it is invariant under conjugation; that is, the conjugation of an element of N by an element of G is always in N. The usual notation for this re ...
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