
Stephanie Friedhoff
stephanie.friedhoff [at] alumni.tufts.edu
University of Wuppertal
Faculty of Mathematics and Natural Sciences Department of Mathematics 42097 Wuppertal Germany 
I am Stephanie Friedhoff, a postdoctoral researcher at the Department of Mathematics of the University of Wuppertal, Germany. My research interests are in the area of computational applied mathematics and scientific computation with a focus on the development of efficient numerical methods for the solution of partial differential equations. In particular, I am interested in developing optimalscaling multigrid solvers for the linear systems that arise from the discretization of problems with evolutionary behavior. My research is focused on adding parallelism in time in such problems (parallelintime integration) as well as on the comparison of multigrid methods that allow spacetime concurrency. As a member of the XBraid ParallelinTime Project Team I am actively involved in the development of the software XBraid, a nonintrusive approach for Parallel time integration with multigrid.
Publications
Journal Articles:  Multigrid methods with spacetime concurrency, R. D. Falgout, S. Friedhoff, Tz. V. Kolev, S. P. MacLachlan, J. B. Schroder, S. Vandewalle, Comput. Vis. Sci., accepted, 2017.
 A generalized predictive analysis tool for multigrid methods, S. Friedhoff, S. MacLachlan, Numer. Linear Alg. Appl. 22 (2015), no. 4, pp. 618647. (doi:10.1002/nla.1977)
 Parallel time integration with multigrid, R. D. Falgout, S. Friedhoff, Tz. V. Kolev, S. P. MacLachlan, J. B. Schroder, SIAM J. Sci. Comput. 36 (2014), no. 6, pp. C635C661.
 Local Fourier analysis of spacetime relaxation and multigrid schemes, S. Friedhoff, S. MacLachlan, C. Börgers, SIAM J. Sci. Comput. 35 (2013), no. 5, pp. S250S276.
 Algebraic multigrid methods for Laplacians of graphs, M. Bolten, S. Friedhoff, A. Frommer, M. Heming, K. Kahl, Linear Algebra and its Applications 434 (2011), pp. 22252243. (doi:10.1016/j.laa.2010.11.008 or preprint as PDF)
PhD Thesis: Other:  3D FluidStructure Interaction Experiment and Benchmark Results, A. Hessenthaler, S. Friedhoff, O. Röhrle, D. Nordsletten, PAMM, Proc. Applying. Math. Mech. 16 (2016), pp. 451452. (doi:10.1002/pamm.201610214 or preprint as PDF)
 Parallel time integration with multigrid, R. Falgout, S. Friedhoff, Tz. Kolev, S. MacLachlan, J. B. Schroder, PAMM, Proc. Appl. Math. Mech. 14 (2014), pp. 951952. (doi:10.1002/pamm.201410456 or preprint as PDF)
 A multigridintime algorithm for solving evolution equations in parallel, S. Friedhoff, R. Falgout, Tz. Kolev, S. MacLachlan, J. Schroder. Student paper winner, Sixteenth Copper Mountain Conference on Multigrid Methods, Copper Mountain, Colorado. March, 2013.

