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Eric Van Douwen
Eric Karel van Douwen (April 25, 1946 in Voorburg, South Holland, Netherlands – July 28, 1987 in Athens, Ohio, United States) was a Dutch mathematician specializing in set-theoretic topology. He received his Ph.D. in 1975 from Vrije Universiteit under the supervision of Maarten Maurice and Johannes Aarts, both of whom were in turn students of Johannes de Groot. He began his academic career studying physics, but became dissatisfied partway through the program. His wife helped inspire his choice to switch to mathematics by asking, "Why not mathematics? It's what you work on all the time anyway". He produced the content of his dissertation unsupervised, and seeking better credentials, he transferred to Vrije to defend, a maneuver permitted by the Dutch university rules. References External links Eric van Douwen's papersIncludes a short bio. From Scott Williams's pages at SUNY Buffalo The State University of New York at Buffalo, commonly called the University at Buffalo (UB ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Voorburg
Voorburg is a town and former municipality in the west part of the province of South Holland, Netherlands. Together with Leidschendam and Stompwijk, it makes up the municipality Leidschendam-Voorburg. It has a population of about 39,000 people. It is considered to be the oldest city in The Netherlands and celebrated its 2000th year of existence in 1988. However in Holland the status of 'city' normally commenced with the bestowing of a 'city charter' by its sovereign leader(s) and none available is that old. Human occupation has certainly been established as occurring two millennia ago, where Voorburg is located now. In 2002, the cities of Leidschendam and Voorburg were merged under the new municipality named "Leidschendam-Voorburg". Situated adjacent to the city of The Hague, it is often regarded as one of its suburbs. History Voorburg, the most densely populated of the three towns in the municipality, has its roots in the 2nd century, when a local civilian settlement gaine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johannes De Groot
Johannes de Groot (May 7, 1914 – September 11, 1972) was a Dutch mathematician, the leading Dutch topologist for more than two decades following World War II.. Biography De Groot was born at Garrelsweer, a village in the municipality of Loppersum, Groningen, on May 7, 1914.. He did both his undergraduate and graduate studies at the Rijksuniversiteit Groningen, where he received his Ph.D. in 1942 under the supervision of Gerrit Schaake. He studied mathematics, physics, and philosophy as an undergraduate, and began his graduate studies concentrating in algebra and algebraic geometry, but switched to point set topology, the subject of his thesis, despite the general disinterest in the subject in the Netherlands at the time after Brouwer, the Dutch giant in that field, had left it in favor of intuitionism. For several years after leaving the university, De Groot taught mathematics at the secondary school level, but in 1946 he was appointed to the Mathematisch Centrum in Amsterdam, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1987 Deaths
File:1987 Events Collage.png, From top left, clockwise: The MS Herald of Free Enterprise capsizes after leaving the Port of Zeebrugge in Belgium, killing 193; Northwest Airlines Flight 255 crashes after takeoff from Detroit Metropolitan Airport, killing everyone except a little girl; The King's Cross fire kills 31 people after a fire under an escalator Flashover, flashes-over; The MV Doña Paz sinks after colliding with an oil tanker, drowning almost 4,400 passengers and crew; Typhoon Nina (1987), Typhoon Nina strikes the Philippines; LOT Polish Airlines Flight 5055 crashes outside of Warsaw, taking the lives of all aboard; The USS Stark is USS Stark incident, struck by Iraq, Iraqi Exocet missiles in the Persian Gulf; President of the United States, U.S. President Ronald Reagan gives a famous Tear down this wall!, speech, demanding that Soviet Union, Soviet leader Mikhail Gorbachev tears down the Berlin Wall., 300x300px, thumb rect 0 0 200 200 Zeebrugge disaster rect 200 0 400 200 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1946 Births
Events January * January 6 - The 1946 North Vietnamese parliamentary election, first general election ever in Vietnam is held. * January 7 – The Allies recognize the Austrian republic with its 1937 borders, and divide the country into four Allied-occupied Austria, occupation zones. * January 10 ** The first meeting of the United Nations is held, at Methodist Central Hall Westminster in London. ** ''Project Diana'' bounces radar waves off the Moon, measuring the exact distance between the Earth and the Moon, and proves that communication is possible between Earth and outer space, effectively opening the Space Age. * January 11 - Enver Hoxha declares the People's Republic of Albania, with himself as prime minister of Albania, prime minister. * January 16 – Charles de Gaulle resigns as head of the Provisional Government of the French Republic, French provisional government. * January 17 - The United Nations Security Council holds its first session, at Church House, Westmin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elsevier
Elsevier () is a Dutch academic publishing company specializing in scientific, technical, and medical content. Its products include journals such as ''The Lancet'', ''Cell'', the ScienceDirect collection of electronic journals, '' Trends'', the '' Current Opinion'' series, the online citation database Scopus, the SciVal tool for measuring research performance, the ClinicalKey search engine for clinicians, and the ClinicalPath evidence-based cancer care service. Elsevier's products and services also include digital tools for data management, instruction, research analytics and assessment. Elsevier is part of the RELX Group (known until 2015 as Reed Elsevier), a publicly traded company. According to RELX reports, in 2021 Elsevier published more than 600,000 articles annually in over 2,700 journals; as of 2018 its archives contained over 17 million documents and 40,000 e-books, with over one billion annual downloads. Researchers have criticized Elsevier for its high profit marg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University At Buffalo, The State University Of New York
The State University of New York at Buffalo, commonly called the University at Buffalo (UB) and sometimes called SUNY Buffalo, is a public research university with campuses in Buffalo and Amherst, New York. The university was founded in 1846 as a private medical college and merged with the State University of New York system in 1962. It is one of the two flagship institutions of the SUNY system. As of fall 2020, the university enrolled 32,347 students in 13 schools and colleges, making it the largest and most comprehensive public university in the state of New York. Since its founding by a group which included future United States President Millard Fillmore, the university has evolved from a small medical school to a large research university. Today, in addition to the College of Arts and Sciences, the university houses the largest state-operated medical school, dental school, education school, business school, engineering school, and pharmacy school, and is also home to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vrije Universiteit
The Vrije Universiteit Amsterdam (abbreviated as ''VU Amsterdam'' or simply ''VU'' when in context) is a public research university in Amsterdam, Netherlands, being founded in 1880. The VU Amsterdam is one of two large, publicly funded research universities in the city, the other being the University of Amsterdam (UvA). The literal translation of the Dutch name ''Vrije Universiteit'' is "Free University". "Free" refers to independence of the university from both the State and the Dutch Reformed Church. Both within and outside the university, the institution is commonly referred to as "the VU". Although founded as a private institution, the VU has received government funding on a parity basis with public universities since 1970. The university is located on a compact urban campus in the southern Buitenveldert neighbourhood of Amsterdam and adjacent to the modern Zuidas business district. The University consistently ranks among the top 150 universities in the world by prominent int ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Holland
South Holland ( nl, Zuid-Holland ) is a province of the Netherlands with a population of over 3.7 million as of October 2021 and a population density of about , making it the country's most populous province and one of the world's most densely populated areas. Situated on the North Sea in the west of the Netherlands, South Holland covers an area of , of which is water. It borders North Holland to the north, Utrecht and Gelderland to the east, and North Brabant and Zeeland to the south. The provincial capital is the Dutch seat of government The Hague, while its largest city is Rotterdam. The Rhine-Meuse-Scheldt delta drains through South Holland into the North Sea. Europe's busiest seaport, the Port of Rotterdam, is located in South Holland. History Early history Archaeological discoveries in Hardinxveld-Giessendam indicate that the area of South Holland has been inhabited since at least c. 7,500 years before present, probably by nomadic hunter-gatherers. Agriculture and perman ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Set-theoretic Topology
In mathematics, set-theoretic topology is a subject that combines set theory and general topology. It focuses on topological questions that are independence (mathematical logic), independent of Zermelo–Fraenkel set theory (ZFC). Objects studied in set-theoretic topology Dowker spaces In the mathematics, mathematical field of general topology, a Dowker space is a topological space that is normal space, T4 but not paracompact space, countably paracompact. Clifford Hugh Dowker, Dowker conjectured that there were no Dowker spaces, and the conjecture was not resolved until Mary Ellen Rudin, M.E. Rudin constructed one in 1971. Rudin's counterexample is a very large space (of cardinality \aleph_\omega^) and is generally not well-behaved. Zoltán Tibor Balogh, Zoltán Balogh gave the first ZFC construction of a small (cardinality Cardinality of the continuum, continuum) example, which was more well-behaved than Rudin's. Using PCF theory, M. Kojman and Saharon Shelah, S. Shelah const ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mathematician
A mathematician is someone who uses an extensive knowledge of mathematics in their work, typically to solve mathematical problems. Mathematicians are concerned with numbers, data, quantity, structure, space, models, and change. History One of the earliest known mathematicians were Thales of Miletus (c. 624–c.546 BC); he has been hailed as the first true mathematician and the first known individual to whom a mathematical discovery has been attributed. He is credited with the first use of deductive reasoning applied to geometry, by deriving four corollaries to Thales' Theorem. The number of known mathematicians grew when Pythagoras of Samos (c. 582–c. 507 BC) established the Pythagorean School, whose doctrine it was that mathematics ruled the universe and whose motto was "All is number". It was the Pythagoreans who coined the term "mathematics", and with whom the study of mathematics for its own sake begins. The first woman mathematician recorded by history was Hypati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
