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math.NA2026
A Theory of Relaxation-Based Algebraic Multigrid
Rayan Moussa, Karsten Kahl
Algebraic multigrid (AMG) methods derive their optimal efficiency from the interplay between a relaxation process and a corresponding coarse grid correction. In many standard formu…
math.NA2026
Nodal Coarsening and Approximate Ideal Interpolation for H(curl) in Algebraic Multigrid
Taoli Shen, James Brannick, Robert Falgout +2
We propose an approximate interpolation construction and a practical coarsening algorithm for algebraic multigrid (AMG) method when applied to H(curl) problems. Building on the gen…