Zeng Jiongzhi
Zeng Jiongzhi (Chinese曾 炯 之, Pinyin Zeng Jiǒngzhī ), English transcription also Chiungtze Chiung Tsen, ( born April 2, 1898 Xinjian county of the city of Nanchang, Chinese Empire, † November 1940 in Xichang, China) was a Chinese mathematician, which dealt with algebra.
Zeng, the son of a poor fisherman, began his studies in China until the age of 24 at the Wuchang Senior Normal College, where one of his teachers, the analyst Kien - Kwong Chen ( 1893-1971 ) was and where he graduated in 1926. He taught as a teacher and then went end of 1928 with a grant from the Chinese government after Germany ( first language for study at the University in Berlin), from 1929 to the University of Göttingen. It was in 1934 in Göttingen doctorate in Emmy Noether (then no longer in Göttingen, they assessed the work but by letter ) and Friedrich Karl Schmidt ( algebras over function fields ). In his thesis, he introduced the idea of quasi- algebraically closed body, and proved a theorem named after him, that the body function of an algebraic curve are complete quasi- algebraic over an algebraically closed field. It follows that the Brauer group of this function body is trivial in one variable over an algebraically closed field (there is no non-trivial central simple division algebra over this function body ). The concept of quasi- algebraic was completed in 1951 by Serge Lang rediscovered ( in his dissertation at Princeton ). Zeng was in Göttingen to the circle of Ernst Witt and was friends with this one.
1934 was followed by a study at the University of Hamburg with Emil Artin, where he graduated also friendship with SS Chern. From July 1935 he was back in China. His only other publication addition to the aforementioned work of 1933 and his dissertation was to stage theory of quasi- algebraic seclusion commutative field in the short-lived journal of the Chinese Mathematical Society ( Volume 1, 1936, p.81 -92), which was based on work in Hamburg and the recently deceased Emmy Noether was dedicated. In 1937 he became a professor at Tianjin University (then Peiyang University), which was evacuated shortly after the outbreak of the Sino- Japanese War to Xi'an and then to other cities. He was, among other algebra courses on the basis of van der Waerden known textbook. After all, he was a professor at Northwestern Institute of Technology in Chenggu. In 1939 he went to the newly founded National Xikang Institute of Technology, Xichang, at the invitation of its President Li Xutien, who was previously president of the Peiyang University. On the arduous journey thither his wife suffered a miscarriage and also the circumstances in Xichang were very bad. He died there in November 1940 from a stomach ulcer.
He was married since 1937.