3 papers
math.NA2026
Randomized Tensor Krylov Subspace Methods via Sketched Einstein Product with Applications to Image and Video Restoration
Achraf Badahmane
We develop a randomized extension of tensor Krylov subspace methods based on the Einstein product for solving large-scale multilinear systems arising in image and video restoration…
math.NA2026
New Randomized Global Generalized Minimum Residual (RGl-GMRES) method
Achraf Badahmane, Xian-Ming GU
In this paper, we develop a new Randomized Global Generalized Minimum Residual (RGlGMRES) algorithm for efficiently computing solutions to large scale linear systems with multiple…
math.NA2025
A new class of regularized preconditioners for double saddle-point problems
Achraf Badahmane
The block structure of double saddle-point problems has prompted extensive research into efficient preconditioners. This paper introduces a novel class of three-by-three block prec…