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Christos Papakyriakopoulos
Christos Dimitriou Papakyriakopoulos (), commonly known as Papa (Greek: Χρήστος Δημητρίου Παπακυριακόπουλος ; June 29, 1914 – June 29, 1976), was a Greek mathematician specializing in geometric topology. Early life Papakyriakopoulos was born in Chalandri, then in the Municipality of Athens, now in North Athens. Career Papakyriakopoulos worked in isolation at Athens Polytechnic as research assistant to Professor Nikolaos Kritikos. But he was enrolled as research student at Athens University, being awarded a PhD in 1943 on the recommendation of Constantin Carathéodory. In 1948, he was invited by Ralph Fox to come as his guest at the Princeton University mathematics department because Fox had been impressed by a letter from Papakyriakopoulos that purported to prove Dehn's lemma. The proof, as it turned out, was faulty, but Fox's sponsorship would continue for many years and enabled Papakyriakopoulos to work on his mathematics without concern for fi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Greek Language
Greek ( el, label=Modern Greek, Ελληνικά, Elliniká, ; grc, Ἑλληνική, Hellēnikḗ) is an independent branch of the Indo-European family of languages, native to Greece, Cyprus, southern Italy (Calabria and Salento), southern Albania, and other regions of the Balkans, the Black Sea coast, Asia Minor, and the Eastern Mediterranean. It has the longest documented history of any Indo-European language, spanning at least 3,400 years of written records. Its writing system is the Greek alphabet, which has been used for approximately 2,800 years; previously, Greek was recorded in writing systems such as Linear B and the Cypriot syllabary. The alphabet arose from the Phoenician script and was in turn the basis of the Latin, Cyrillic, Armenian, Coptic, Gothic, and many other writing systems. The Greek language holds a very important place in the history of the Western world. Beginning with the epics of Homer, ancient Greek literature includes many works of lasting impo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bernard Maskit
Bernard Maskit is an American mathematician known for his expertise in Kleinian groups. The Maskit slice through the moduli space of Kleinian groups is named after him; he is the author of the book ''Kleinian Groups'' (Grundlehren der Mathematischen Wissenschaften 287, Springer-Verlag, 1988) and gave an invited talk about Kleinian groups at the 1974 International Congress of Mathematicians. Maskit earned his Ph.D. in 1964 from New York University under the supervision of Lipman Bers. After postdoctoral studies at the Institute for Advanced Study he was an assistant professorship at the Massachusetts Institute of Technology from 1965 to 1972. He then moved to the mathematics department at Stony Brook University, where he retired in 2008 and is now a professor emeritus. In 2012, he became one of the inaugural fellows of the American Mathematical Society The American Mathematical Society (AMS) is an association of professional mathematicians dedicated to the interests of mathema ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1976 Deaths
Events January * January 3 – The International Covenant on Economic, Social and Cultural Rights enters into force. * January 5 – The Pol Pot regime proclaims a new constitution for Democratic Kampuchea. * January 11 – The 1976 Philadelphia Flyers–Red Army game results in a 4–1 victory for the National Hockey League's Philadelphia Flyers over HC CSKA Moscow of the Soviet Union. * January 16 – The trial against jailed members of the Red Army Faction (the West German extreme-left militant Baader–Meinhof Group) begins in Stuttgart. * January 18 ** Full diplomatic relations are established between Bangladesh and Pakistan 5 years after the Bangladesh Liberation War. ** The Scottish Labour Party is formed as a breakaway from the UK-wide party. ** Super Bowl X in American football: The Pittsburgh Steelers defeat the Dallas Cowboys, 21–17, in Miami. * January 21 – First commercial Concorde flight, from London to Bahrain. * January 27 ** The United States v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1914 Births
This year saw the beginning of what became known as World War I, after Archduke Franz Ferdinand of Austria, heir to the Austrian throne was assassinated by Serbian nationalist Gavrilo Princip. It also saw the first airline to provide scheduled regular commercial passenger services with heavier-than-air aircraft, with the St. Petersburg–Tampa Airboat Line. Events January * January 1 – The St. Petersburg–Tampa Airboat Line in the United States starts services between St. Petersburg and Tampa, Florida, becoming the first airline to provide scheduled regular commercial passenger services with heavier-than-air aircraft, with Tony Jannus (the first federally-licensed pilot) conveying passengers in a Benoist XIV flying boat. Abram C. Pheil, mayor of St. Petersburg, is the first airline passenger, and over 3,000 people witness the first departure. * January 11 – The Sakurajima volcano in Japan begins to erupt, becoming effusive after a very large earthquake ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Annals Of Mathematics
The ''Annals of Mathematics'' is a mathematical journal published every two months by Princeton University and the Institute for Advanced Study. History The journal was established as ''The Analyst'' in 1874 and with Joel E. Hendricks as the founding editor-in-chief. It was "intended to afford a medium for the presentation and analysis of any and all questions of interest or importance in pure and applied Mathematics, embracing especially all new and interesting discoveries in theoretical and practical astronomy, mechanical philosophy, and engineering". It was published in Des Moines, Iowa, and was the earliest American mathematics journal to be published continuously for more than a year or two. This incarnation of the journal ceased publication after its tenth year, in 1883, giving as an explanation Hendricks' declining health, but Hendricks made arrangements to have it taken over by new management, and it was continued from March 1884 as the ''Annals of Mathematics''. The n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Proceedings Of The National Academy Of Sciences Of The United States Of America
''Proceedings of the National Academy of Sciences of the United States of America'' (often abbreviated ''PNAS'' or ''PNAS USA'') is a peer-reviewed multidisciplinary scientific journal. It is the official journal of the National Academy of Sciences, published since 1915, and publishes original research, scientific reviews, commentaries, and letters. According to ''Journal Citation Reports'', the journal has a 2021 impact factor of 12.779. ''PNAS'' is the second most cited scientific journal, with more than 1.9 million cumulative citations from 2008 to 2018. In the mass media, ''PNAS'' has been described variously as "prestigious", "sedate", "renowned" and "high impact". ''PNAS'' is a delayed open access journal, with an embargo period of six months that can be bypassed for an author fee ( hybrid open access). Since September 2017, open access articles are published under a Creative Commons license. Since January 2019, ''PNAS'' has been online-only, although print issues are ava ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Greek Mathematicians
In historical times, Greek civilization has played one of the major roles in the history and development of Greek mathematics. To this day, a number of Greek mathematicians are considered for their innovations and influence on mathematics. Ancient Greek mathematicians * Anaxagoras *Anthemius of Tralles *Antiphon * Apollonius of Perga * Archimedes * Archytas *Aristaeus the Elder * Aristarchus of Samos *Aristotle *Asclepius of Tralles * Attalus of Rhodes *Autolycus of Pitane * Bion of Abdera * Bryson of Heraclea *Callippus *Carpus of Antioch * Chrysippus * Cleomedes *Conon of Samos *Ctesibius *Democritus *Dicaearchus *Dinostratus * Diocles *Dionysodorus * Diophantus *Domninus of Larissa * Eratosthenes *Euclid * Eudoxus of Cnidus *Eutocius of Ascalon *Geminus *Heliodorus of Larissa *Hero of Alexandria *Hipparchus *Hippasus *Hippias *Hippocrates of Chios *Hypatia *Hypsicles *Leodamas of Thasos *Marinus of Neapolis *Menaechmus *Menelaus of Alexandria *Meton of Athens * Metrodorus *Ni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New York City
New York, often called New York City or NYC, is the List of United States cities by population, most populous city in the United States. With a 2020 population of 8,804,190 distributed over , New York City is also the List of United States cities by population density, most densely populated major city in the United States, and is more than twice as populous as second-place Los Angeles. New York City lies at the southern tip of New York (state), New York State, and constitutes the geographical and demographic center of both the Northeast megalopolis and the New York metropolitan area, the largest metropolitan area in the world by urban area, urban landmass. With over 20.1 million people in its metropolitan statistical area and 23.5 million in its combined statistical area as of 2020, New York is one of the world's most populous Megacity, megacities, and over 58 million people live within of the city. New York City is a global city, global Culture of New ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Princeton, New Jersey
Princeton is a municipality with a borough form of government in Mercer County, in the U.S. state of New Jersey. It was established on January 1, 2013, through the consolidation of the Borough of Princeton and Princeton Township, both of which are now defunct. Centrally located within the Raritan Valley region, Princeton is a regional commercial hub for the Central New Jersey region and a commuter town in the New York metropolitan area.New York-Newark, NY-NJ-CT-PA Combined Statistical Area . Accessed December 5, 2020. As of the |
Stomach Cancer
Stomach cancer, also known as gastric cancer, is a cancer that develops from the lining of the stomach. Most cases of stomach cancers are gastric carcinomas, which can be divided into a number of subtypes, including gastric adenocarcinomas. Lymphomas and mesenchymal tumors may also develop in the stomach. Early symptoms may include heartburn, upper abdominal pain, nausea, and loss of appetite. Later signs and symptoms may include weight loss, yellowing of the skin and whites of the eyes, vomiting, difficulty swallowing, and blood in the stool, among others. The cancer may spread from the stomach to other parts of the body, particularly the liver, lungs, bones, lining of the abdomen, and lymph nodes. The most common cause is infection by the bacterium ''Helicobacter pylori'', which accounts for more than 60% of cases. Certain types of ''H. pylori'' have greater risks than others. Smoking, dietary factors such as pickled vegetables and obesity are other risk factors. About 10% ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Richard Wagner
Wilhelm Richard Wagner ( ; ; 22 May 181313 February 1883) was a German composer, theatre director, polemicist, and conductor who is chiefly known for his operas (or, as some of his mature works were later known, "music dramas"). Unlike most opera composers, Wagner wrote both the libretto and the music for each of his stage works. Initially establishing his reputation as a composer of works in the romantic vein of Carl Maria von Weber and Giacomo Meyerbeer, Wagner revolutionised opera through his concept of the ''Gesamtkunstwerk'' ("total work of art"), by which he sought to synthesise the poetic, visual, musical and dramatic arts, with music subsidiary to drama. He described this vision in a series of essays published between 1849 and 1852. Wagner realised these ideas most fully in the first half of the four-opera cycle ''Der Ring des Nibelungen'' (''The Ring of the Nibelung''). His compositions, particularly those of his later period, are notable for their complex textures, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Liberation Front (Greece)
The National Liberation Front ( el, Εθνικό Απελευθερωτικό Μέτωπο, ''Ethnikó Apeleftherotikó Métopo'' (EAM) was an alliance of various political parties and organizations which fought to liberate Greece from Axis Occupation. It was the main movement of the Greek Resistance during the occupation of Greece. Its main driving force was the Communist Party of Greece (KKE), but its membership throughout the occupation included several other leftist and republican groups. ΕΑΜ became the first true mass social movement in modern Greek history. Its military wing, the Greek People's Liberation Army (ELAS), quickly grew into the largest armed guerrilla force in the country, and the only one with nationwide presence. At the same time, from late 1943 onwards, the political enmity between ΕΑΜ and rival resistance groups from the centre and right evolved into a virtual civil war, while its relationship with the British and the British-backed Greek government ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
