M4N4 COMPUTATIONAL LINEAR ALGEBRA WITH ADVANCED STUDY (Term 1)

Dr G. Moore

An analysis of linear algebra algorithms with emphasis placed on both their mathematical analysis and practical applications. Totally examined by projects. Competence in Fortran or C is a prerequisite. Normally appropriate for Mathematics Year 4 and JMC 3.

Direct methods for linear systems: triangular equations, Gauss elimination, LU-decomposition, conditioning and finite-precision arithmetic, partial and complete pivoting, Cholesky factorisation, band matrices, QR-factorisation. Iterative methods for linear systems: Richardson, Jacobi, Gauss - Seidel, SOR; block variants; convergence criteria; Chebyshev acceleration. Symmetric eigenvalue problem: power method and variants, JacobiÕs method, Householder reduction to tridiagonal form, eigenvalues of tridiagonal matrices, the QR method. Krylov subspace methods: Lanczos method; conjugate gradient method, preconditioning. Introduction to multigrid.