…Generators are generally unbounded operators. In 1948, Kosaku Yoshida and E. Hille (1894- ) independently characterized the generators of semigroups, and established the theory of semigroups. This is called the Yoshida-Hille theory, and has a wide range of applications to partial differential equations and stochastic processes, and has been extremely useful in the development of these theories. … *Some of the terminology that mentions "Hille, E." is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…生成作用素は一般には有界でない作用素である。1948年に吉田耕作とヒレE.Hille(1894‐ )は,互いに独立に半群の生成作用素の特徴づけを行うことにより,半群の理論を確立した。これは吉田=ヒレの理論と呼ばれ,偏微分方程式や確率過程などに応用が広く,それらの理論の発展にたいへんに役だっている。… ※「Hille,E.」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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