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Subject Item
dbr:Kiiti_Morita
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Kiiti Morita Kiiti Morita 森田紀一 Kiiti Morita 모리타 기이치 Kiiti Morita
rdfs:comment
Kiiti Morita (jap. 森田 紀一, Morita Kiichi; * 11. Februar 1915 in Hamamatsu; † 4. August 1995 in Tokio) war ein japanischer Mathematiker, der sich mit Algebra (Ringtheorie, Homologische Algebra) und allgemeiner Topologie beschäftigte. Er war verheiratet und hatte einen Sohn. Kiiti Morita (森田 紀一, Morita Kiichi, February 11, 1915 – August 4, 1995) was a Japanese mathematician working in algebra and topology. Morita was born in 1915 in Hamamatsu, Shizuoka Prefecture and graduated from the Tokyo Higher Normal School in 1936. Three years later he was appointed assistant at the Tokyo University of Science. He received his Ph.D. from Osaka University in 1950, with a thesis in topology. After teaching at the Tokyo Higher Normal School, he became professor at the University of Tsukuba in 1951. He held this position until 1978, after which he taught at Sophia University. Morita died of heart failure in 1995 at the Sakakibara Heart Institute in Tokyo; he was survived by his wife, Tomiko, his son, Yasuhiro, and a grandson. Kiiti Morita (森田 紀一, Morita Kiichi) (11 février 1915 - 4 août 1995) est un mathématicien japonais qui travaille dans les domaines de l'algèbre (théorie des anneaux, algèbre cohomologique) et de la topologie. Kiiti Morita (jap. 森田紀一 Morita Ki'ichi; ur. 11 lutego 1915 w Hamamatsu – zm. 4 sierpnia 1995 w Tokio) – japoński matematyk specjalizujący się głównie w algebrze i topologii. 모리타 기이치(일본어: 森田 紀一, 영어: Kiiti Morita, 1915~1995)는 일본의 수학자이다. 추상대수학과 일반위상수학에 공헌하였고, 모리타 동치와 모리타 정리를 증명하였다. 森田 紀一（もりた きいち、1915年2月11日 – 1995年8月4日 ）は日本の数学者。専門は代数学、位相空間論。 静岡県浜松生まれ。1939年、東京文理科大学の助手に就任。1950年、大阪大学で学位を取得。以後、東京教育大学、筑波大学、上智大学で教授を務める。代数学においては、や、森田同値の概念を導入。一般位相空間論においては正規空間の研究、次元論、shape理論に関する業績がある。
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Kiiti Morita
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Kiiti Morita
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Fuchū, Tokyo, Japan
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1995-08-04
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1915-08-11
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dbo:abstract
Kiiti Morita (jap. 森田 紀一, Morita Kiichi; * 11. Februar 1915 in Hamamatsu; † 4. August 1995 in Tokio) war ein japanischer Mathematiker, der sich mit Algebra (Ringtheorie, Homologische Algebra) und allgemeiner Topologie beschäftigte. Morita studierte an der Höheren Normalschule Tokio, wo er 1936 sein Diplom machte. Ab 1939 war er Dozent an der Geistes- und Naturwissenschaftlichen Hochschule Tokio, promovierte 1950 über Topologie an der Universität Osaka und war ab 1951 Professor an der Pädagogischen Universität Tokio (die 1949 unter anderem aus der Vereinigung der Geistes- und Naturwissenschaftlichen Hochschule Tokio und der Höheren Normalschule Tokio entstand und später in der Universität Tsukuba aufging) und nach seiner Emeritierung an der Universität Tsukuba ab 1978 an der Sophia-Universität in Tokio. Von Morita stammen fundamentale algebraische Konzepte, die er in den 1950er Jahren in relativer Isolation entwickelte (er war nicht Teil der führenden japanischen Algebra-Gruppe an der Universität Nagoya um Tadashi Nakayama). Er ist für die Morita-Theorie in der Modul- und Ringtheorie bekannt (Morita-Äquivalenz, Morita-Dualität), die er 1958 entwickelte. Seine Äquivalenz-Sätze sind eine wichtige Technik der modernen Algebra und wurden in den USA und Europa vor allem durch die Vorlesungen von Hyman Bass Anfang der 1960er Jahre bekannt. In der allgemeinen Topologie arbeitete er über viele Gebiete wie Normalität, Parakompaktheit (Satz von Morita), Dimensionstheorie, Homotopietheorie, Klassfikationsräume von Abbildungen, Shape-Theory. In der Dimensionstheorie zeigte er 1954 die Äquivalenz verschiedener Dimensions-Definitionen. Seine Morita-Vermutungen, über Normale Räume wurden inzwischen bewiesen (Mary Ellen Rudin, K. Chiba und T.C. Przymusiński 1986, Zoltán Tibor Balogh 2001). Er war verheiratet und hatte einen Sohn. 모리타 기이치(일본어: 森田 紀一, 영어: Kiiti Morita, 1915~1995)는 일본의 수학자이다. 추상대수학과 일반위상수학에 공헌하였고, 모리타 동치와 모리타 정리를 증명하였다. Kiiti Morita (jap. 森田紀一 Morita Ki'ichi; ur. 11 lutego 1915 w Hamamatsu – zm. 4 sierpnia 1995 w Tokio) – japoński matematyk specjalizujący się głównie w algebrze i topologii. Kiiti Morita (森田 紀一, Morita Kiichi) (11 février 1915 - 4 août 1995) est un mathématicien japonais qui travaille dans les domaines de l'algèbre (théorie des anneaux, algèbre cohomologique) et de la topologie. Kiiti Morita (森田 紀一, Morita Kiichi, February 11, 1915 – August 4, 1995) was a Japanese mathematician working in algebra and topology. Morita was born in 1915 in Hamamatsu, Shizuoka Prefecture and graduated from the Tokyo Higher Normal School in 1936. Three years later he was appointed assistant at the Tokyo University of Science. He received his Ph.D. from Osaka University in 1950, with a thesis in topology. After teaching at the Tokyo Higher Normal School, he became professor at the University of Tsukuba in 1951. He held this position until 1978, after which he taught at Sophia University. Morita died of heart failure in 1995 at the Sakakibara Heart Institute in Tokyo; he was survived by his wife, Tomiko, his son, Yasuhiro, and a grandson. He introduced the concepts now known as Morita equivalence and which were given wide circulation in the 1960s by Hyman Bass in a series of lectures. The Morita conjectures on normal topological spaces are also named after him. 森田 紀一（もりた きいち、1915年2月11日 – 1995年8月4日 ）は日本の数学者。専門は代数学、位相空間論。 静岡県浜松生まれ。1939年、東京文理科大学の助手に就任。1950年、大阪大学で学位を取得。以後、東京教育大学、筑波大学、上智大学で教授を務める。代数学においては、や、森田同値の概念を導入。一般位相空間論においては正規空間の研究、次元論、shape理論に関する業績がある。
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