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John Robert Stallings Jr. (July 22, 1935 – November 24, 2008) was a mathematician known for his seminal contributions to geometric group theory and 3-manifold topology. Stallings was a Professor Emeritus in the Department of Mathematics at the University of California at Berkeley〔( Mathematician John Stallings died last year at 73. ) UC Berkeley press release, January 12, 2009. Accessed January 26, 2009〕 where he had been a faculty member since 1967.〔 He published over 50 papers, predominantly in the areas of geometric group theory and the topology of 3-manifolds. Stallings' most important contributions include a proof, in a 1960 paper, of the Poincaré Conjecture in dimensions greater than six and a proof, in a 1971 paper, of the Stallings theorem about ends of groups. ==Biographical data== John Stallings was born on July 22, 1935 in Morrilton, Arkansas.〔 Stallings received his B.Sc. from University of Arkansas in 1956 (where he was one of the first two graduates in the university's Honors program)〔(All things academic. ) Volume 3, Issue 4; November 2002.〕 and he received a Ph.D. in Mathematics from Princeton University in 1959 under the direction of Ralph Fox.〔 After completing his PhD, Stallings held a number of postdoctoral and faculty positions, including being an NSF postdoctoral fellow at Oxford University as well as and instructorship and a faculty appointment at Princeton. Stallings joined the University of California at Berkeley as a faculty member in 1967 where he remained until his retirement in 1994.〔 Even after his retirement, Stallings continued supervising UC Berkeley graduate students until 2005.〔 Stallings was an Alfred P. Sloan Research fellow from 1962–65 and a Miller Institute fellow from 1972-73.〔 Over the course of his career, Stallings had 22 doctoral students including Marc Culler and Hyam Rubinstein and 60 doctoral descendants. He published over 50 papers, predominantly in the areas of geometric group theory and the topology of 3-manifolds. Stallings delivered an invited address as the International Congress of Mathematicians in Nice in 1970〔John R. Stallings. ''Group theory and 3-manifolds.'' Actes du Congrès International des Mathématiciens (Nice, 1970), Tome 2, pp. 165–167. Gauthier-Villars, Paris, 1971.〕 and a James K. Whittemore Lecture at Yale University in 1969.〔John Stallings. ''Group theory and three-dimensional manifolds.'' A James K. Whittemore Lecture in Mathematics given at Yale University, 1969. Yale Mathematical Monographs, 4. Yale University Press, New Haven, Conn.–London, 1971.〕 Stallings received the Frank Nelson Cole Prize in Algebra from the American Mathematical Society in 1970.〔(Frank Nelson Cole Prize in Algebra. ) American Mathematical Society.〕 The conference "Geometric and Topological Aspects of Group Theory", held at the Mathematical Sciences Research Institute in Berkeley in May 2000, was dedicated to the 65th birthday of Stallings.〔(Geometric and Topological Aspects of Group Theory, conference announcement ), atlas-conferences.com〕 In 2002 a special issue of the journal Geometriae Dedicata was dedicated to Stallings on the occasion of his 65th birthday.〔(Geometriae Dedicata ), vol. 92 (2002). Special issue dedicated to John Stallings on the occasion of his 65th birthday. Edited by R. Z. Zimmer.〕 Stallings died from prostate cancer on November 24, 2008.〔. Accessed January 26, 2009.〕〔(Professor Emeritus John Stallings of the UC Berkeley Mathematics Department has died. ) Announcement at the website of the Department of Mathematics of the University of California at Berkeley. Accessed December 4, 2008〕 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「John R. Stallings」の詳細全文を読む スポンサード リンク
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