Gustav Hedlund
Gustav Arnold Hedlund (born May 7, 1904 in Somerville , Middlesex County , Massachusetts , † March 15, 1993 ) was an American mathematician .
Live and act
Gustav Hedlund received his doctorate in 1930 from Marston Morse at Harvard ("I. Geodesics on a Two-Dimensional Riemannian Manifold with Periodic Coefficients II. Poincare's Rotation Number and Morse's Type Number"). He was a professor at Yale University .
In 1933/34, 1938, 1939 and 1953/54 he was at the Institute for Advanced Study .
Hedlund and his teacher Morse were one of the founders of the topological (“symbolic”) dynamics. B. deals with the ergodic properties of the geodetic flow on manifolds of negative curvature.
His doctoral students include Walter H. Gottschalk and Annita Tuller .
Fonts
- with Walter H. Gottschalk: Topological Dynamics. AMS Colloquium Publications, 1955.
- Dynamics of Geodesic Flow. In: Bulletin AMS. Volume 45, 1939.
Web links
- Literature by and about Gustav Hedlund in the catalog of the German National Library
Individual evidence
- ^ Gustav Hedlund in the US Social Security Death Register (SSDI), accessed October 4, 2018
| personal data | |
|---|---|
| SURNAME | Hedlund, Gustav |
| ALTERNATIVE NAMES | Hedlund, Gustav Arnold |
| BRIEF DESCRIPTION | American mathematician |
| DATE OF BIRTH | May 7, 1904 |
| PLACE OF BIRTH | Somerville , Middlesex County , Massachusetts |
| DATE OF DEATH | March 15, 1993 |