2 papers
math.OC2026
Primal-dual multigrid methods for nonsmooth optimization
Felipe Guerra, Tuomo Valkonen
In optimization, one often encounters problems of the form . In this work, we combine primal-dual algorithms with multigrid techniques for their solution. T…
math.OC2025
Multigrid methods for total variation
Felipe Guerra, Tuomo Valkonen
Based on a nonsmooth coherence condition, we construct and prove the convergence of a forward-backward splitting method that alternates between steps on a fine and a coarse grid. O…