*Professor
Departments of Statistics and Mathematics and the College*

**Guillaume Bal’s** research interests include applied mathematics; partial differential equations; mathematical analysis of inverse problems, including hybrid inverse problems and inverse transport problems; applications in medical and geophysical imaging; equations with random coefficients and propagation of stochasticity; convergence to deterministic or stochastic models; and wave propagation and imaging in heterogeneous media.

His research has been published in *Inverse Problems*, *Communications in Mathematical Physics*, *Communications in Partial Differential Equations*, the *Archive for Rational Mechanics and Analysis*, and numerous Society for Industrial and Applied Mathematics (SIAM) journals. Bal is a fellow of the American Mathematical Society and a recipient of the Calderón Prize, which recognizes researchers who have made significant advances in the mathematics of inverse problems.

Bal holds a diploma from the École Polytechnique in Paris and a PhD in applied mathematics from the University of Paris VI. For his PhD thesis, “Coupling of Equations and Homogenization in Neutron Transport,” he was awarded the Jean-Pierre Lepetit Prize. He was a postdoctoral research associate at Stanford University, after which he served as an L. E. Dickson Instructor at the University of Chicago. Most recently, he was a professor of applied mathematics at Columbia University.