## Learning outcomes of the course unit

The primary goal of this teaching course is to give the basis of Numerical Mathematics, both from a theoretical and algorithmic point of view, in such a way that students can be able to illustrate and discuss some applications. It has to be considered as the natural prosecution of the Numerical Analysis course held for undergraduated students. At the end, students will know a large amount of fundamental numerical methods useful to go deeper inside this subject and will be able to face new numerical problems in different contexts of Applied Mathematics.

## Prerequisites

Numerical Analysis

## Course contents summary

- Approximation of Functions and Data.

- Numerical Integration.

- Numerical linear algebra.

- Solution of Nonlinear Equations.

- Numerical Solution of Ordinary Differential Equations

- Numerical Solution of boundary value problems.

## Course contents

- Approximation of Functions and Data. Trigonometric interpolation. Rational interpolation. Least-squares approximation: the continuous and the discrete cases.

- Numerical Integration. Orthogonal polynomials. Gaussian quadrature on bounded and unbounded intervals. Error estimates. Multiple integrals. Adaptive algorithms.

- Numerical linear algebra. Basic iterative methods. Jacobi, Gauss-Seidel and SOR methods. Richardson methods. Coniugate gradient method. GMRES and Bi_CGStab. Convergence results. Stop tests.

- Eigenvalue and eigenvector problem. Localization of eigenvalues. Stability analysis. The power method. The inverse power method. Eigenvalues and eigenvectors of a symmetric matrix: Sturm technique. Householder transformations. Reduction of a general matrix to Hessemberg form. The LR and QR algorithms.

- Solution of Nonlinear Equations: Fixed-point methods.Convergence results. Stop tests. Newton’s method in several variables.

- Numerical Solution of Ordinary Differential Equations: Linear multistep methods for Cauchy problems. Order, convergence and stability analysis. Adams methods. Predictor-corrector methods.

- Boundary valure problems: shooting method, finite difference method, Galerkin method.

## Recommended readings

A.Quarteroni, R.Sacco, F.Saleri, Matematica Numerica, SPRINGER, (2008).

G.Naldi, L.Pareschi, G.Russo, Introduzione al Calcolo Scientifico, McGraw-Hill, (2001)

## Teaching methods

During frontal lessons, the course topics will be analysed, underlying theoretical and algorithmic aspects. Various results obtained by the application of the presented numerical methods will be illustrated and discussed.

Slides shown during lectures will be loaded on Elly e-learning platform at the end of each topic.

## Assessment methods and criteria

Through the preparation of a work with a theorical introduction to the chosen numerical method for the approximation of the searched solution and the presentation of related numerical results, students will reach a good autonomy in facing the numerical solution of simple model problems. Results of the knowledge level reached by the students will be verified by an oral exam, where each of them will illustrate what done during the preparation of the above mentioned work given in advance, and will answer to some questions related to the course program.

## Other informations

During the teaching course, students are asked to resolve some theorical and practical exercises, with the help of computing machines and using Matlab programming language, already introduced in Numerical Analysis course in the previous years.