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Frits Beukers
Frits Beukers () (born 1953, Ankara) is a Dutch mathematician, who works on number theory and hypergeometric functions. In 1979 Beukers received his PhD at Leiden University under the direction of Robert Tijdeman with thesis ''The generalized Ramanujan–Nagell Equation'', published in ''Acta Arithmetica'', vol. 38, 1980/1981. From 1979 to 1980 he was a visiting scholar at the Institute for Advanced Study. He became a professor in Leiden and in the 2000s at Utrecht University. Beukers works on questions of transcendence and irrationality in number theory, and on other topics. In connection with the famous proof by Roger Apéry (1978) on the irrationality of the values of the Riemann zeta function evaluated at the points 2 and 3, Beukers gave a much simpler alternate proof using Legendre polynomials. He also published on questions in mechanics about dynamical system In mathematics, a dynamical system is a system in which a function describes the time dependence of a po ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ankara
Ankara ( , ; ), historically known as Ancyra and Angora, is the capital of Turkey. Located in the central part of Anatolia, the city has a population of 5.1 million in its urban center and over 5.7 million in Ankara Province, making it Turkey's second-largest city after Istanbul. Serving as the capital of the ancient Celtic state of Galatia (280–64 BC), and later of the Roman province with the same name (25 BC–7th century), the city is very old, with various Hattian, Hittite, Lydian, Phrygian, Galatian, Greek, Persian, Roman, Byzantine, and Ottoman archeological sites. The Ottomans made the city the capital first of the Anatolia Eyalet (1393 – late 15th century) and then the Angora Vilayet (1867–1922). The historical center of Ankara is a rocky hill rising over the left bank of the Ankara River, a tributary of the Sakarya River. The hill remains crowned by the ruins of Ankara Castle. Although few of its outworks have survived, there ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
