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math.OC2026
Vanishing Events and Regularity-Conditioned Reachability in Linear Stieltjes Systems
Francisco J. Fernández
We study linear Stieltjes control systems in which actuation is concentrated at finitely many temporal events, and we ask what happens when one of those events progressively loses…
math.OC2026
Reachability and exact controllability of linear Stieltjes differential systems
Francisco J. Fernández
We study reachability and exact controllability for systems driven by a nondecreasing left-continuous Stieltjes derivator whose measure may have continuous, singular-continuous and…
math.OC2026
Exact discrete-adjoint optimization of trap timing and placement in a Stieltjes-time reaction-diffusion model: A Galicia case study
Francisco J. Fernández, Iván Area
Seasonal population models must combine diffusion, inactive periods and abrupt biological transfers while remaining differentiable with respect to localized interventions. We formu…