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math.NA2026

Polytopal Discontinuous Galerkin Discretizations of Coupled Non-Newtonian Stokes-Darcy Systems

Paola F. Antonietti, Michele Botti, Nicola Parolini +2

We propose and analyze a polytopal discontinuous Galerkin method for the numerical approximation of a coupled non-Newtonian Stokes-Darcy system modeling the interaction between a n…

math.NA2026

A Virtual Element Method for elliptic problems on trimmed background meshes

L. Beirão da Veiga, C. Canuto, R. H. Nochetto +2

We consider a two-dimensional piecewise domain that cuts through a quasi-uniform fixed polygonal background mesh, for instance made of quadrilaterals. A simple procedure base…

math.NA2026

A Multilevel Monte Carlo Virtual Element Method for Uncertainty Quantification of Elliptic Partial Differential Equations

Paola F. Antonietti, Francesca Bonizzoni, Ilaria Perugia +1

We introduce a Monte Carlo Virtual Element estimator based on Virtual Element discretizations for stochastic elliptic partial differential equations with random diffusion coefficie…

math.NA2026

Virtual Element methods for non-Newtonian shear-thickening fluid flow problems

Paola F. Antonietti, Lourenço Beirão da Veiga, Michele Botti +3

In this work, we present a comprehensive theoretical analysis for Virtual Element discretizations of incompressible non-Newtonian flows governed by the Carreau-Yasuda constitutive…

math.NA2025

Deep Learning Accelerated Algebraic Multigrid Methods for Polytopal Discretizations of Second-Order Differential Problems

Paola F. Antonietti, Matteo Caldana, Lorenzo Gentile +1

Algebraic Multigrid (AMG) methods are state-of-the-art algebraic solvers for partial differential equations. Still, their efficiency depends heavily on the choice of suitable param…

math.NA2025

Learning cardiac activation and repolarization times with operator learning

Edoardo Centofanti, Giovanni Ziarelli, Nicola Parolini +3

Solving partial or ordinary differential equation models in cardiac electrophysiology is a computationally demanding task, particularly when high-resolution meshes are required to…