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math.NA2025
Efficient space-time discretizations for tracking the boundaries of reachable sets
Janosch Rieger, Kyria Wawryk
The reachable sets of nonlinear control systems can in general only be numerically approximated, and are often very expensive to calculate. In this paper, we propose an algorithm t…
math.NA2023
Generalized Gearhart-Koshy acceleration is a Krylov subspace method
Markus Hegland, Janosch Rieger
The Kaczmarz method is a row-action method for solving consistent non-square linear systems, and Gearhart-Koshy acceleration is a line-search that minimizes the Euclidean norm of t…