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J. D. Tamarkin
Jacob David Tamarkin (russian: Я́ков Дави́дович Тама́ркин, ''Yakov Davidovich Tamarkin''; 11 July 1888 – 18 November 1945) was a Russian-American mathematician best known for his work in mathematical analysis. Biography Tamarkin was born in Chernihiv, Imperial Russia to a wealthy Jewish family. His father, David Tamarkin, was a physician and his mother, Sophie Krassilschikov, was from a family of a landowner. He shares a common ancestor with the Van Leer family, sometimes spelled Von Löhr or Valar. He moved to St. Petersburg as a child and grew up there. In high school, he befriended Alexander Friedmann, a future cosmologist, with whom he wrote his first mathematics paper in 1906, and remained friends and colleagues until Friedmann's sudden death in 1925. Vladimir Smirnov was his other friend from the same gymnasium. Many years later, they coauthored a popular textbook titled "A course in higher mathematics". Tamarkin studied in St. Petersbur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chernihiv
Chernihiv ( uk, Черні́гів, , russian: Черни́гов, ; pl, Czernihów, ; la, Czernihovia), is a city and municipality in northern Ukraine, which serves as the administrative center of Chernihiv Oblast and Chernihiv Raion within the oblast. Chernihiv's population is The city was designated as a Hero City during the 2022 Russian Invasion of Ukraine. Geography Chernihiv stands on the Desna River to the north-north-east of Kyiv. The area was served by Chernihiv Shestovytsia Airport prior to 2002, and during the Cold War it was the site of Chernihiv air base. History Etymology The name "Chernihiv" is a compound name, which begins with the root 'Cherni/Cherno,' which means "black" in Slavic. Scholars vary with interpretations of the second part of the name ("hiv"/gov", "говъ") though scholars such as Dr. Martin Dimnik, Professor of Medieval History at University of Toronto, connect Cerhnihov with the worship of "the black god" Chernibog. Early histor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physician
A physician (American English), medical practitioner (Commonwealth English), medical doctor, or simply doctor, is a health professional who practices medicine, which is concerned with promoting, maintaining or restoring health through the study, diagnosis, prognosis and treatment of disease, injury, and other physical and mental impairments. Physicians may focus their practice on certain disease categories, types of patients, and methods of treatment—known as specialities—or they may assume responsibility for the provision of continuing and comprehensive medical care to individuals, families, and communities—known as general practice. Medical practice properly requires both a detailed knowledge of the academic disciplines, such as anatomy and physiology, underlying diseases and their treatment—the '' science'' of medicine—and also a decent competence in its applied practice—the art or '' craft'' of medicine. Both the role of the physician and the meani ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Riga
Riga (; lv, Rīga , liv, Rīgõ) is the capital and largest city of Latvia and is home to 605,802 inhabitants which is a third of Latvia's population. The city lies on the Gulf of Riga at the mouth of the Daugava river where it meets the Baltic Sea. Riga's territory covers and lies above sea level, on a flat and sandy plain. Riga was founded in 1201 and is a former Hanseatic League member. Riga's historical centre is a UNESCO World Heritage Site, noted for its Art Nouveau/Jugendstil architecture and 19th century wooden architecture. Riga was the European Capital of Culture in 2014, along with Umeå in Sweden. Riga hosted the 2006 NATO Summit, the Eurovision Song Contest 2003, the 2006 IIHF Men's World Ice Hockey Championships, 2013 World Women's Curling Championship and the 2021 IIHF World Championship. It is home to the European Union's office of European Regulators for Electronic Communications (BEREC). In 2017, it was named the European Region of Gastronomy. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Analytic Geometry
In classical mathematics, analytic geometry, also known as coordinate geometry or Cartesian geometry, is the study of geometry using a coordinate system. This contrasts with synthetic geometry. Analytic geometry is used in physics and engineering, and also in aviation, Aerospace engineering, rocketry, space science, and spaceflight. It is the foundation of most modern fields of geometry, including Algebraic geometry, algebraic, Differential geometry, differential, Discrete geometry, discrete and computational geometry. Usually the Cartesian coordinate system is applied to manipulate equations for planes, straight lines, and circles, often in two and sometimes three dimensions. Geometrically, one studies the Euclidean plane (two dimensions) and Euclidean space. As taught in school books, analytic geometry can be explained more simply: it is concerned with defining and representing geometric shapes in a numerical way and extracting numerical information from shapes' numerical defin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., federal district, five major unincorporated territories, nine United States Minor Outlying Islands, Minor Outlying Islands, and 326 Indian reservations. The United States is also in Compact of Free Association, free association with three Oceania, Pacific Island Sovereign state, sovereign states: the Federated States of Micronesia, the Marshall Islands, and the Palau, Republic of Palau. It is the world's List of countries and dependencies by area, third-largest country by both land and total area. It shares land borders Canada–United States border, with Canada to its north and Mexico–United States border, with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations. With a population of over 333 million, it is the List of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Emigration
Emigration is the act of leaving a resident country or place of residence with the intent to settle elsewhere (to permanently leave a country). Conversely, immigration describes the movement of people into one country from another (to permanently move to a country). A migrant ''emigrates'' from their old country, and ''immigrates'' to their new country. Thus, both emigration and immigration describe migration, but from different countries' perspectives. Demographers examine push and pull factors for people to be pushed out of one place and attracted to another. There can be a desire to escape negative circumstances such as shortages of land or jobs, or unfair treatment. People can be pulled to the opportunities available elsewhere. Fleeing from oppressive conditions, being a refugee and Asylum seeker, seeking asylum to get Refugee#Refugee status, refugee status in a foreign country, may lead to permanent emigration. Forced displacement refers to groups that are forced to aban ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saint Petersburg Polytechnical University
Peter the Great St. Petersburg Polytechnic University, abbreviated as SPbPU (also, formerly "Saint Petersburg State Technical University", abbreviated as SPbSTU), is a Russian technical university located in Saint Petersburg. Other former names included Peter the Great Polytechnic Institute and Kalinin Polytechnic Institute. The university houses one of the country's most advanced research labs in hydro–aerodynamics. The university's alumni include Nobel Prize winners, such as Pyotr Kapitsa and Zhores Alferov, physicists and atomic weapon designers such as Yulii Khariton, Nikolay Dukhov, Abram Ioffe, Aleksandr Leipunskii, and Yakov Zeldovich, aircraft designers and aerospace engineers, such as Yulii Khariton, Oleg Antonov, Nikolai Polikarpov, and Georgy Beriev, and chess grandmasters, such as David Bronstein. The university offers academic programs at the Bachelor, Master's, and Doctorate degree levels. SPbSPU consists of structural units called Institutes divide ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perm State University
Perm State University (now Perm State National Research University; russian: Пермский университет, Пермский государственный университет, , romanised: , ) or PSU, PSNRU (russian: ПГУ, , romanised: , ), is located in the city of Perm, Perm Krai, Russia. Founded in 1916, it claims to be one of the oldest universities in the Ural and eastern territories of Russia. Its current rector is Dmitriy Krasilnikov. History Perm State University was founded on 14 October 1916. Its origins lie in the opening of a branch of St. Petersburg University in the city of Perm. This decision of the Russian government was in tune with the strategy of the cultural and geopolitical development of the Urals economic region. The idea of a center of higher education in the Urals was supported by D.I. Mendeleev, A.S.Popov, D.N.Mamin-Sibiryak, and other public figures. A mass shooting occurred at the university on 20 September 2021, by a law s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saint Petersburg State Electrotechnical University
Saint Petersburg Electrotechnical University "LETI" (ETU, ETU "LETI", russian: Санкт-Петербургский государственный электротехнический университет «ЛЭТИ» им. В.И. Ульянова (Ленина), СПбГЭТУ «ЛЭТИ») is a public university and one of the oldest Russian higher education institutions. It was founded in 1886 as a Technical College. LETI, as it is popularly called, received the status of a higher education institution in 1899 and became known as Electrotechnical Institute. The University has training programs in fields of radio engineering, telecommunications, control processes, computer engineering and IT, electronics, biomedical engineering, management, and linguistics. In August 2016 ETU “LETI” became the part of the Project 5-100, a Russian academic excellence program seeking to bring five Russian universities into the top 100 in world rankings. In 2022, the university was ranked ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Petersburg State University Of Means Of Communication
Emperor Alexander I St. Petersburg State Transport University (PGUPS) (russian: Петербургский государственный университет путей сообщения Императора Александра I, abbreviated ПГУПС) is a higher education institution specializing in railway transport. Before 1990 it was known as "Leningrad Institute of Railway Engineers". The main building is located on Moskovsky Prospekt, number 9. The University provides training in specialties and areas of bachelor and master training. Emperor Alexander I St. Petersburg State Transport University is an academic partner of the Center for international logistics of Russian Railways and Deutsche Bahn AG. History Emperor Alexander I St. Petersburg State Transport University was one of the first technical universities in Russia. Its earliest precursors date back to 1798-1809 as a part of the training provided in the Department of Water Communications by N. P. Rumya ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vladimir Ivanovich Smirnov (mathematician)
Vladimir Ivanovich Smirnov (russian: Влади́мир Ива́нович Смирно́в) (10 June 1887 – 11 February 1974) was a mathematician who made significant contributions in both pure and applied mathematics, and also in the history of mathematics. Smirnov worked on diverse areas of mathematics, such as complex functions and conjugate functions in Euclidean spaces. In the applied field his work includes the propagation of waves in elastic media with plane boundaries (with Sergei Sobolev Prof Sergei Lvovich Sobolev (russian: Серге́й Льво́вич Со́болев) HFRSE (6 October 1908 – 3 January 1989) was a Soviet mathematician working in mathematical analysis and partial differential equations. Sobolev introdu ...) and the oscillations of elastic spheres. His pioneering approach to solving the initial-boundary value problem to the wave equation formed the basis of the spacetime triangle diagram technique, spacetime triangle diagram (STTD) techn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cosmologist
Cosmology () is a branch of physics and metaphysics dealing with the nature of the universe. The term ''cosmology'' was first used in English in 1656 in Thomas Blount's ''Glossographia'', and in 1731 taken up in Latin by German philosopher Christian Wolff, in ''Cosmologia Generalis''. Religious or mythological cosmology is a body of beliefs based on mythological, religious, and esoteric literature and traditions of creation myths and eschatology. In the science of astronomy it is concerned with the study of the chronology of the universe. Physical cosmology is the study of the observable universe's origin, its large-scale structures and dynamics, and the ultimate fate of the universe, including the laws of science that govern these areas. It is investigated by scientists, such as astronomers and physicists, as well as philosophers, such as metaphysicians, philosophers of physics, and philosophers of space and time. Because of this shared scope with philosophy, theori ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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