|
Sergei Godunov
Sergei Konstantinovich Godunov (; 17 July 1929 – 15 July 2023) was a Soviet and Russian professor at the Sobolev Institute of Mathematics of the Russian Academy of Sciences in Novosibirsk, Russia. Biography Godunov's most influential work is in the area of applied and numerical mathematics, particularly in the development of methodologies used in Computational Fluid Dynamics ( CFD) and other computational fields. Godunov's theorem (Godunov 1959) (also known as Godunov's order barrier theorem) : ''Linear numerical schemes for solving partial differential equations, having the property of not generating new extrema (a monotone scheme), can be at most first-order accurate''. Godunov's scheme is a conservative numerical scheme for solving partial differential equations. In this method, the conservative variables are considered as piecewise constant over the mesh cells at each time step and the time evolution is determined by the exact solution of the Riemann (shock tube) probl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moscow
Moscow is the Capital city, capital and List of cities and towns in Russia by population, largest city of Russia, standing on the Moskva (river), Moskva River in Central Russia. It has a population estimated at over 13 million residents within the city limits, over 19.1 million residents in the urban area, and over 21.5 million residents in Moscow metropolitan area, its metropolitan area. The city covers an area of , while the urban area covers , and the metropolitan area covers over . Moscow is among the world's List of largest cities, largest cities, being the List of European cities by population within city limits, most populous city entirely in Europe, the largest List of urban areas in Europe, urban and List of metropolitan areas in Europe, metropolitan area in Europe, and the largest city by land area on the European continent. First documented in 1147, Moscow became the capital of the Grand Principality of Moscow, which led the unification of the Russian lan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Michigan
The University of Michigan (U-M, U of M, or Michigan) is a public university, public research university in Ann Arbor, Michigan, United States. Founded in 1817, it is the oldest institution of higher education in the state. The University of Michigan is one of the earliest American research universities and is a founding member of the Association of American Universities. In the fall of 2023, the university employed 8,189 faculty members and enrolled 52,065 students in its programs. The university is Carnegie Classification of Institutions of Higher Education, classified among "R1: Doctoral Universities – Very high research activity". It consists of nineteen colleges and offers 250 degree programs at the undergraduate and graduate levels. The university is Higher education accreditation in the United States, accredited by the Higher Learning Commission. In 2021, it ranked third among American universities in List of countries by research and development spending, research expe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2023 Deaths
This is a list of lists of deaths of notable people, organized by year. New deaths articles are added to their respective month (e.g., Deaths in ) and then linked below. 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 Earlier years ''Deaths in years earlier than this can usually be found in the main articles of the years.'' See also * Lists of deaths by day * Deaths by year (category) {{DEFAULTSORT:deaths by year ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1929 Births
This year marked the end of a period known in American history as the Roaring Twenties after the Wall Street Crash of 1929 ushered in a worldwide Great Depression. In the Americas, an agreement was brokered to end the Cristero War, a Catholic Counter-revolutionary, counter-revolution in Mexico. The Judicial Committee of the Privy Council, a British high court, ruled that Canadian women are persons in the ''Edwards v. Canada (Attorney General)'' case. The 1st Academy Awards for film were held in Los Angeles, while the Museum of Modern Art opened in New York City. The Peruvian Air Force was created. In Asia, the Republic of China (1912–1949), Republic of China and the Soviet Union engaged in a Sino-Soviet conflict (1929), minor conflict after the Chinese seized full control of the Manchurian Chinese Eastern Railway, which ended with a resumption of joint administration. In the Soviet Union, General Secretary of the Communist Party of the Soviet Union, General Secretary Joseph S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Matematicheskii Sbornik
''Matematicheskii Sbornik'' (, abbreviated ''Mat. Sb.'') is a peer reviewed Russian mathematical journal founded by the Moscow Mathematical Society in 1866. It is the oldest successful Russian mathematical journal. The English translation is ''Sbornik: Mathematics''. It is also sometimes cited under the alternative name ''Izdavaemyi Moskovskim Matematicheskim Obshchestvom'' or its French translation ''Recueil mathématique de la Société mathématique de Moscou'', but the name ''Recueil mathématique'' is also used for an unrelated journal, ''Mathesis (journal), Mathesis''. Yet another name, ''Sovetskii Matematiceskii Sbornik'', was listed in a statement in the journal in 1931 apologizing for the former editorship of Dmitri Egorov, who had been recently discredited for his religious views; however, this name was never actually used by the journal. The first editor of the journal was Nikolai Brashman, who died before its first issue (dedicated to his memory) was published. Its curr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Upwind Scheme
In computational physics, the term advection scheme refers to a class of numerical discretization methods for solving hyperbolic partial differential equations. In the so-called upwind schemes ''typically'', the so-called upstream variables are used to calculate the derivatives in a flow field. That is, derivatives are estimated using a set of data points biased to be more "upwind" of the query point, with respect to the direction of the flow. Historically, the origin of upwind methods can be traced back to the work of Richard Courant, Courant, Isaacson, and Rees who proposed the CIR method. Model equation To illustrate the method, consider the following one-dimensional linear advection equation : \frac + a \frac = 0 which describes a wave propagating along the x-axis with a velocity a. This equation is also a mathematical model for one-dimensional linear advection. Consider a typical grid point i in the domain. In a one-dimensional domain, there are only two directions associated ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Riemann Solver
A Riemann solver is a numerical method used to solve a Riemann problem A Riemann problem, named after Bernhard Riemann, is a specific initial value problem composed of a conservation equation together with piecewise constant initial data which has a single discontinuity in the domain of interest. The Riemann prob .... They are heavily used in computational fluid dynamics and computational magnetohydrodynamics. Definition Generally speaking, Riemann solvers are specific methods for computing the numerical flux across a discontinuity in the Riemann problem. They form an important part of high-resolution schemes; typically the right and left states for the Riemann problem are calculated using some form of nonlinear reconstruction, such as a flux limiter or a WENO method, and then used as the input for the Riemann solver. Exact solvers Sergei K. Godunov is credited with introducing the first exact Riemann solver for the Euler equations, by extending the previous CIR (Co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Order Of Alexander Nevsky
The Order of Alexander Nevsky () is an Order (distinction), order of merit of the Russia, Russian Federation named in honour of saint Alexander Nevsky (1220–1263) and bestowed to civil servants for twenty years or more of highly meritorious service. It was originally established by the Soviet Union as a military honour during World War II, more precisely by Decree of the Presidium of the Supreme Soviet of the USSR of July 29, 1942. Its statute was amended by Decree of the Presidium of the Supreme Soviet of the USSR of February 26, 1947. It bears a similar name to the Imperial Order of Saint Alexander Nevsky which had been established by Empress Catherine I of Russia in 1725, and continued to be bestowed by the heads of the House of Romanov until the 1917 Russian Revolution. The Order of Alexander Nevsky was reinstated by the Soviet Union, minus the words "Imperial" and "Saint", and awarded to officers of the army for personal courage and resolute leadership. The Order was retaine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Order Of Honour (Russia)
The Order of Honour () is a state order of the Russian Federation established by Decree of the President of Russia, Presidential Decree No. 442 of March 2, 1994 to recognise high achievements in government, economic, scientific, sociocultural, public, sport and charitable activities. Its statute was amended by decree No. 19 of January 6, 1999 and more lately by decree No. 1099 of January 7, 2010 which defined its present status. The award is the successor of the Soviet Order of the Badge of Honour (renamed Order of Honour in 1988). Award statute The Order of Honour is awarded to citizens of the Russian Federation: * For high achievements in production and economic indicators in industry, construction, agriculture, communications, energy and transport, coupled with the predominant use of innovative technologies in the production process * For a significant increase in the level of socio-economic development of the Russian Federation; for achievements in modernizing the Russian h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mikhail Lavrentyev
Mikhail Alekseyevich Lavrentyev (or Lavrentiev, ; November 19, 1900 – October 15, 1980) was a Soviet mathematician and hydrodynamicist. Early years Lavrentyev was born in Kazan, where his father was an instructor at a college (he later became a professor at Kazan University, then Moscow University). He entered Kazan University, and, when his family moved to Moscow in 1921, he transferred to the Department of Physics and Mathematics of Moscow University. He graduated in 1922. He continued his studies in the university in 1923-26 as a graduate student of Nikolai Luzin. Although Luzin was alleged to plagiarize in science and indulge in anti-Sovietism by some of his students in 1936, Lavrentyev did not participate in the notorious political persecution of his teacher which is known as the Luzin case or Luzin affair. In fact Luzin was a friend of his father. Mid career In 1927, Lavrentyev spent half a year in France, collaborating with French mathematicians, and upon returned ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aleksey Krylov
Aleksey Nikolaevich Krylov (; – October 26, 1945) was a Russian naval engineer, applied mathematician and memoirist. Biography Aleksey Nikolayevich Krylov was born on August 3 O.S., 1863 in Visyaga village near the town of Alatyr, Simbirsk Governorate, Russian Empire (today Krylovo, Chuvashia) to the family of a retired artillery officer. His father, Nikolay Aleksandrovich Krylov (1830-1911), was the local landlord and vice-Marshal of Nobility, but had relatively liberal views and later led the ''zemskaya uprava'' (the Executive Board of the Zemstvo self-government system) in Alatyr. His mother, née Sofya Viktorovna Lyapunova, was a member of the distinguished Lyapunov family (the mathematician Aleksandr Mikhailovich Lyapunov and musician Sergei Mikhailovich Lyapunov were his second cousins). In 1878 Krylov entered the Naval College (rus. Морское училище) and graduated with distinction in 1884. There he did his first scientific work with Ivan de Collon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
