Tucker Hartland, an applied mathematics graduate student at the University of California, Merced, spent the summer working on PETSc, the Portable, Extensible Toolkit for Scientific computing. PETSc is a suite of libraries developed at Argonne for solving scientific applications modeled by partial differential equations (PDEs) and includes the Toolkit for Advanced Optimization. Hartland investigated PDE-constrained optimization in PETSc for elliptic, parabolic, nonlinear, and time-dependent problems. He worked in the MCS division as a Givens Associate, and he stated, “The experience was enriching to my continuing development as an applied mathematician.”

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