Leo Zippin

Leo Zippin ( born January 25, 1905 in New York City; † May 11, 1995 ) was an American mathematician.

Zippin 1929 his doctorate at the University of Pennsylvania. From 1929 he was a lecturer at the Pennsylvania State College and from 1930 to 1932 at the University of Texas. From 1938 he was a professor at Queens College in New York, where he retired in 1971. 1945 and 1950/1 he was at the Institute for Advanced Study.

Zippin was one of those ( with Andrew Gleason, Deane Montgomery, Hidehiko Yamabe ) that the fifth Hilbert problem solved in the 1950s ( to show that locally Euclidean groups are Lie groups, that is differentiable group have effect ).

Leo Zippin was a member of the American Academy of Arts and Sciences since 1970.

Writings

• With Deane Montgomery: Topological transformation groups, Interscience 1955, Warrior 1974
• The uses of infinity, Random House, 1962 ( New Mathematics Library)