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Erhard Schmidt (13 January 1876 – 6 December 1959) was a Baltic German mathematician whose work significantly influenced the direction of mathematics in the twentieth century. Schmidt was born in Tartu ((ドイツ語:Dorpat)), in the Governorate of Livonia (now Estonia). His advisor was David Hilbert and he was awarded his doctorate from Georg-August University of Göttingen in 1905. His doctoral dissertation was entitled ''Entwickelung willkürlicher Funktionen nach Systemen vorgeschriebener'' and was a work on integral equations. Together with David Hilbert he made important contributions to functional analysis. During World War II Schmidt held positions of authority at the University of Berlin and had to carry out various Nazi resolutions against the Jews—a job that he apparently did not do well, since he was criticized at one point for not understanding the "Jewish question." At the celebration of Schmidt's 75th birthday in 1951 a prominent Jewish mathematician, Hans Freudenthal, who had survived the Nazi years, spoke of the difficulties that Schmidt faced during that period without criticism.〔 He was, however, a conservative and a nationalist, and defended Hitler after Kristallnacht, telling Issai Schur that "Suppose we had to fight a war to rearm Germany, unite with Austria, liberate the Saar and the German part of Czechoslovakia. Such a war would have cost us half a million young men. But everybody would have admired our victorious leader. Now, Hitler has sacrificed half a million Jews and has achieved great things for Germany. I hope some day you will be recompensed but I am still grateful to Hitler".〔Sanford L. Segal, (Mathematicians Under the Nazis ), Princeton University Press 2003, Page 358.〕 After the war, in 1948, Schmidt founded and became the first editor-in-chief of the journal ''Mathematische Nachrichten''.〔 ==See also== * Gram–Schmidt process * Hilbert–Schmidt operator * Lyapunov–Schmidt reduction * Schmidt decomposition * Hilbert–Schmidt integral operator * List of Baltic German scientists 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「Erhard Schmidt」の詳細全文を読む スポンサード リンク
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