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math.NA2026
Dissolution of carbonate stones caused by CO2 pollutant: Numerical modelling of erosion scenarios
Elishan Christian Braun, Gabriella Bretti, Samuele Ferri +2
In this paper, we introduce a mathematical model of carbonate-stone erosion driven by the penetration of CO2-derived acidity into the water-filled pore network. The model couples t…
math.NA2025
Spectral analysis of the stiffness matrix sequence in the approximated Stokes equation
Samuele Ferri, Chiara Giraudo, Valerio Loi +2
In the present paper, we analyze in detail the spectral features of the matrix sequences arising from the Taylor-Hood - approximation of variable viscos…
math.NA2025
Blocking structures, approximation, and preconditioning
Nikos Barakitis, Marco Donatelli, Samuele Ferri +3
We consider block-structured matrices , where the blocks are of (block) unilevel Toeplitz type with matrix-valued generating functions. Under mild assumptions on t…