2 papers
math.NA2020
Non-overlapping block smoothers for the Stokes equations
Lisa Claus, Matthias Bolten
Overlapping block smoothers efficiently damp the error contributions from highly oscillatory components within multigrid methods for the Stokes equations but they are computational…
cs.MS2020
Sparse Approximate Multifrontal Factorization with Butterfly Compression for High Frequency Wave Equations
Yang Liu, Pieter Ghysels, Lisa Claus +1
We present a fast and approximate multifrontal solver for large-scale sparse linear systems arising from finite-difference, finite-volume or finite-element discretization of high-f…