Per-Gunnar Martinsson, known for his fundamental contributions to numerical analysis and scientific computing, joined the ICES faculty Sept. 1.
Martinsson, also a member of UT’s Department of Mathematics faculty, holds the W. A. ``Tex'' Moncrief, Jr. Endowment in Simulation-Based Engineering and Sciences - Endowed Chair No. 4.
Prior to joining UT, Martinsson served as a professor of mathematics at the University of Oxford, and as an affiliated professor at the Royal Institute of Technology (KTH), Stockholm. He served on the faculty at the University of Colorado, Boulder between 2005 and 2017, and prior to that he was at Yale University.
Martinsson completed his Ph.D. here at UT in Computational and Applied Mathematics in 2002. CAM was the Ph.D. program that preceded the current program administered by ICES, the Computational Sciences, Engineering, and Mathematics (CSEM) program.
His research contributions in particular have been cited for: (1) the development of linear time algorithms for dense matrix operations related to elliptic partial differential equations and integral equations, and (2) deep and innovative contributions to the development of probabilistic algorithms for the rapid solution of certain classes of large-scale linear algebra problems.
Martinsson’s research has had a significant impact in data science applications, and in scientific computing. His recent work includes: randomized methods in linear algebra; fast solvers for elliptic PDEs; O(N) direct solvers; structured matrix computations; numerical methods for scattering problems, computational fluid dynamics, and acoustics; applied harmonic analysis; fast multipole methods; boundary integral equation methods; modeling of heterogeneous materials; bandgap phenomena; and lattice equations.
Among his many honors are the 2017 SIAM Germund Dahlquist Prize and a 2008 National Science Foundation Career Award.