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Gustav Elfving : ウィキペディア英語版 | Gustav Elfving
Erik Gustav Elfving (June 25, 1908 – March 25, 1984) was a Finnish mathematician and statistician. In statistics, he wrote pioneering papers about the optimal design of experiments. He made other notable contributions to the mathematical sciences and to Finnish universities.〔 ==Early life== Erik Gustav Elfving was son of Frederik Elfving, a professor of botany at the University of Helsinki,〔 and Thyra Elfving (née Ingman).〔 He was the youngest of four children.〔 Gustav Elfving earned excellent grades at the Svenska normallyceum, a Helsinki gymnasium for Swedish-speaking boys, from which he graduated in 1926. In the same year he enrolled at the University of Helsinki, planning to major in astronomy. He switched to mathematics, graduating in 1930 in mathematics, with astronomy and physics as minor subjects. From 1927 to 1929, he worked as a computational assistant at the astronomical observatory of the University of Helsinki. He studied probability theory under J. W. Lindeberg, who is now known for Lindeberg's condition for the central limit theorem.〔 He wrote his (1934) dissertation under the supervision of Rolf Nevanlinna;〔 his thesis studied Riemann surfaces and their uniformization. In the Nevanlinna theory of the values of meromorphic functions, Elfving's results were praised by Drasin.〔〔Drasin, D. (1977). The inverse problem of the Nevanlinna theory. ''Acta Math.'' 138 83–151.〕
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