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An Iterative Solver for the HPS Discretization Applied to Three Dimensional Helmholtz Problems
.This manuscript presents an efficient solver for the linear system that arises from the hierarchical Poincaré–Steklov (HPS) discretization of three dimensional variable coefficient Helmholtz problems. Previous work on the HPS method has tied it with a direct solver. This work is the first efficient iterative solver for the linear system …