John R. Stallings
John R. Stallings | |
|---|---|
2006 photo of Stallings | |
| Born | July 22, 1935 Morrilton, Arkansas, U.S. |
| Died | November 24, 2008 (aged 73) Berkeley, California, U.S. |
| Alma mater | University of Arkansas Princeton University |
| Known for | proof of Poincaré Conjecture in dimensions greater than six; Stallings theorem about ends of groups; Stallings graphs and automata |
| Awards | Frank Nelson Cole Prize in Algebra (1971) |
| Scientific career | |
| Fields | Mathematics |
| Institutions | University of California at Berkeley |
| Doctoral advisor | Ralph Fox |
| Doctoral students | Marc Culler Stephen M. Gersten J. Hyam Rubinstein |
John Robert Stallings Jr. (July 22, 1935 – November 24, 2008) was a mathematician known for his seminal contributions to geometric group theory and 3-manifold topology. Stallings was a Professor Emeritus in the Department of Mathematics at the University of California at Berkeley where he had been a faculty member since 1967. He published over 50 papers, predominantly in the areas of geometric group theory and the topology of 3-manifolds. Stallings' most important contributions include a proof, in a 1960 paper, of the Poincaré Conjecture in dimensions greater than six and a proof, in a 1971 paper, of the Stallings theorem about ends of groups.