Ian Agol, Ph.D.
University of California, Berkeley![Portrait photo of Ian Agol](https://simonsfoundation.imgix.net/wp-content/uploads/2017/07/12031941/Agol.jpg?auto=format&w=120&h=120&fit=crop&crop=faces&q=90)
Ian Agol has made major contributions to three-dimensional topology and hyperbolic geometry, completing some of Thurston’s problems elucidating the structure of 3-manifolds. He proved several deep and long-standing conjectures, including the Virtual Haken conjecture, the Marden Tameness conjecture and the Simon conjecture.