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math.CA2026
Stieltjes-generated moment functionals and orthogonality: a transfer principle and an image theorem
Iván Area, Francisco J. Fernández, F. Adrián F. Tojo
We study the orthogonality induced by Stieltjes derivatives from the point of view of ordinary polynomial moment functionals. If \(g\) is a derivator and the Stieltjes monomials \(…
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…