William Jaco | |
|---|---|
 William Jaco at Oberwolfach in 2012 | |
| Born | July 14, 1940 |
| Alma mater | B.A., Fairmont State College M.A., Pennsylvania State University Ph.D (1968) University of Wisconsin-Madison |
| Known for | JSJ decomposition |
| Awards | Grace B. Kerr Professor |
| Scientific career | |
| Fields | Mathematics, Topology, and Geometry |
| Institutions | Rice University, Oklahoma State University |
William "Bus" H. Jaco (born July 14, 1940 in Grafton, West Virginia) is an American mathematician who is known for his role in the Jaco–Shalen–Johannson decomposition theorem and efficient triangulations of 3-manifolds. He retired from Oklahoma State University in 2021 as Regents Professor Emeritus and appointed adjunct professor at Rice University in 2021.