Chung-Tao Yang

Chung- Tao Yang ( born May 4, 1923 in Pingyang, † 2005) was a Chinese- American mathematician, the ( general topology, differential topology, algebraic topology) and differential geometry dealt with topology.

Yang graduated from Zhejiang University with a bachelor 's degree in 1946 Su Buqing. He was there until 1948 and assistant 1948/49, at the Chinese Academy of Sciences. 1949/50, he was a lecturer at the National Taiwan University in 1952 and his doctorate from Tulane University with Alexander Wallace ( Equivalence of the Alexander - Kolmogorov and Cech Cohomology Theories ). From 1952 he was at the University of Illinois and from 1954 to 1956 at the Institute for Advanced Study, where his years of collaboration with Deane Montgomery began. In 1956 he became assistant professor in 1961 and professor at the University of Pennsylvania, where he chaired from 1978 to 1983 the mathematics faculty. In 1991 he retired.

In 1980 he proved the case of odd dimension of a conjecture of Wilhelm Blaschke on the characterization of the n-dimensional sphere as a bye -manifold. The case of even dimension proved Jerry Kazdan, Marcel Berger and Alan Weinstein. With Deane Montgomery, he worked on the effects of groups on manifolds in differential topology. He dealt first with finite projective geometry.

He became a member of the Academia Sinica, the Mathematics Institute, he advised from 1992 1968.