An unusual way of solving linear systems
Mediante integrali multipli agevoli per il calcolo numerico vengono espressi il valore assoluto di un determinante qualsiasi e le formule di Cramer.
An upper bound on the number of monomials in determinants of sparse matrices with symbolic entries.
An up-wind finite element method for a filtration problem
An upwind finite element method for singularly perturbed elliptic problems and local estimates in the -norm
An upwinding mixed finite element method for a mean field model of superconducting vortices
An upwinding mixed finite element method for a mean field model of superconducting vortices
In this paper, we construct a combined upwinding and mixed finite element method for the numerical solution of a two-dimensional mean field model of superconducting vortices. An advantage of our method is that it works for any unstructured regular triangulation. A simple convergence analysis is given without resorting to the discrete maximum principle. Numerical examples are also presented.
An XFEM/DG approach for fluid-structure interaction problems with contact
In this work, we address the problem of fluid-structure interaction (FSI) with moving structures that may come into contact. We propose a penalization contact algorithm implemented in an unfitted numerical framework designed to treat large displacements. In the proposed method, the fluid mesh is fixed and the structure meshes are superimposed to it without any constraint on the conformity. Thanks to the Extended Finite Element Method (XFEM), we can treat discontinuities of the fluid solution on...
An X-ray transform estimate in Rn.
We prove an x-ray estimate in general dimension which is a stronger version of Wolff's Kakeya estimate [12]. This generalizes the estimate in [13], which dealt with the n = 3 case.
Analisi costruttiva e numerica per una classe di equazioni di Hammerstein della teoria del trasporto
Analog solution of a given problem in the back time
Analogies from 2D to 3D Exercises in Disciplined Creativity
Analyse de l'estimation bornée à l'aide de simulations
Analyse d'un élément mixte pour le problème de Stokes . I. Résultats générauax.
Analyse d'un élément mixte pour le problème de Stokes . II. Construction et estimations d'erreur.
Analyse numérique des écoulements quasi-Newtoniens dont la viscosité obéit à la loi puissance ou la loi de carreau.
Analysis and comparison of several components mode synthesis methods on one-dimensional domains.
Analysis and finite element error estimates for the velocity tracking problem for Stokes flows via a penalized formulation
A distributed optimal control problem for evolutionary Stokes flows is studied via a pseudocompressibility formulation. Several results concerning the analysis of the velocity tracking problem are presented. Semidiscrete finite element error estimates for the corresponding optimality system are derived based on estimates for the penalized Stokes problem and the BRR (Brezzi-Rappaz-Raviart) theory. Finally, the convergence of the solutions of the penalized optimality systems as is examined.
Analysis and finite element error estimates for the velocity tracking problem for Stokes flows via a penalized formulation
A distributed optimal control problem for evolutionary Stokes flows is studied via a pseudocompressibility formulation. Several results concerning the analysis of the velocity tracking problem are presented. Semidiscrete finite element error estimates for the corresponding optimality system are derived based on estimates for the penalized Stokes problem and the BRR (Brezzi-Rappaz-Raviart) theory. Finally, the convergence of the solutions of the penalized optimality systems as ε → 0 is examined. ...
Analysis and numerical approximation of a parabolic-hyperbolic transmission problem
In this paper we investigate a mixed parabolic-hyperbolic initial boundary value problem in two disconnected intervals with Robin-Dirichlet conjugation conditions. A finite difference scheme approximating this problem is proposed and analyzed. An estimate of the convergence rate is obtained.
Analysis and numerical solutions of positive and dead core solutions of singular Sturm-Liouville problems.