4 citations · 4 across the 3 of their papers we have counts for
3 papers
math.NA2021
A note on using the mass matrix as a preconditioner for the Poisson equation
Chen Greif, Yunhui He
We show that the mass matrix derived from finite elements can be effectively used as a preconditioner for iteratively solving the linear system arising from finite-difference discr…
math.NA2021★ 4 cited
A closed-form multigrid smoothing factor for an additive Vanka-type smoother applied to the Poisson equation
Chen Greif, Yunhui He
We consider an additive Vanka-type smoother for the Poisson equation discretized by the standard finite difference centered scheme. Using local Fourier analysis, we derive analytic…
math.NA2021
HSS(0): an Improved Hermitian/Skew-Hermitian Splitting Iteration
Chen Greif, Yunhui He
We propose an improved version of the Hermitian/skew-Hermitian splitting (HSS) iterative method, which we call HSS(0), to solve non-Hermitian linear systems with a positive definit…