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David M. Young, Jr. (October 20, 1923 – December 21, 2008) was an American mathematician and computer scientist who was one of the pioneers in the field of modern numerical analysis/scientific computing. ==Contributions== Dr. Young is best known for establishing the mathematical framework for iterative methods (a.k.a. preconditioning). These algorithms are now used in computer software on high performance supercomputers for the numerical solution of large sparse linear systems arising from problems involving partial differential equations. See, in particular, the successive over-relaxation (SOR) and symmetric successive over-relaxation (SSOR) methods.〔.〕 When David Young first began his research on iterative methods in the late 1940s, there was some skepticism with the idea of using iterative methods on the new computing machines to solve industrial-size problems. Ever since Young's ground-breaking Ph.D. thesis, iterative methods have been used on a wide range of scientific and engineering applications with a variety of new iterative methods having been developed. 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「David M. Young, Jr.」の詳細全文を読む スポンサード リンク
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