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Lawrence Clinton Washington (born 1951, Vermont) is an American mathematician, who specializes in number theory. ==Biography== Washington studied at Johns Hopkins University, where in 1971 he received his B.A. and masters degree. In 1974 he earned his PhD at Princeton University under Kenkichi Iwasawa with thesis ''Class numbers and extensions''.〔''Class numbers and extensions'', Mathematische Annalen, vol. 214, 1975, p. 177〕 He then became an assistant professor at Stanford University and from 1977 at the University of Maryland, where he became in 1981 an associate professor and in 1986 a professor. He held visiting positions at several institutions, including IHES (1980/81), Max-Planck-Institut für Mathematik (1984), the Institute for Advanced Study (1996), and MSRI (1986/87), as well as at the University of Perugia, Nankai University and the State University of Campinas. Washington wrote a standard work on cyclotomic fields. He also worked on p-adic L-functions. He wrote a treatise with Allan Adler on their discovery of a connection between higher-dimensional analogues of magic squares and p-adic L-functions.〔Adler, Washington ''P-adic L functions and higher dimensional magic cubes'', Journal of Number Theory, vol. 52, 1995, p.179. See also Adler, Mathematical Intelligencer. 1992〕 Washington has done important work on Iwasawa theory, Cohen-Lenstra heuristics, and elliptic curves and their applications to cryptography. In Iwasawa theory he proved with Bruce Ferrero in 1979 a conjecture of Kenkichi Iwasawa, that the -invariant vanishes for cyclotomic Z''p''-extensions of abelian number fields (Theorem of Ferrero-Washington).〔Ferrero, Washington ''The Iwasawa invariant μp vanishes for abelian number fields'', Annals of Mathematics, vol. 109, 1979, pp. 377–395. Another proof was provided by W. Sinnott, Inventiones Mathematicae, vol. 75, 1984, 273.〕 In 1979–1981 he was a Sloan Fellow. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Lawrence C. Washington」の詳細全文を読む スポンサード リンク
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