Quasi-optimal complexity hp-FEM for Poisson on a rectangle. - Kars Knook; Sheehan Olver; Ioannis P. A. Papadopoulos (CoRR, 2024)

Shifted HSS preconditioners for the indefinite Helmholtz equation. - Colin J. Cotter; Kars Knook; Joshua Hope-Collins (CoRR, 2025)