Alexandre Chorin
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Alexandre J. Chorin is a professor of mathematics at the University of California, Berkeley who works in applied mathematics.
Chorin was one of the first to develop an algorithm for the numerical solution of Incompressible Navier-Stokes equation. He developed "Artificial compressibility method" and the immensely popular "Projection method". His has made outsatanding contribution to the field of Computational Fluid Dynamics.
Chorin received the Norbert Wiener Prize in Applied Mathematics in 2000. This prize is awarded "for an outstanding contribution to applied mathematics in the highest and broadest sense". Chorin was a student of Peter D. Lax and teacher of James A. Sethian. Incidentally, both Lax and Sethian also won the Norbert Wiener Prize.