PT EN

Numerical Linear Algebra

Program

Introduction. Matrix decompositions. Conditioning and stability. Floating point arithmetic. Error analysis.
Systems of equations. Gaussian elimination with pivoting strategies. Cholesky factorization. Stability analysis. Large systems of equations. Sparse matrix techniques. Iterative methods based on Krylov subspaces: Conjugate Gradients, GMRES, Biorthogonalization methods (BiCG and BICGstab). Convergence and spectral properties. Preconditioning.
Eigenvalues. Reduction to Hessenberg or tridiagonal forms. Rayleigh quotient and inverse iteration. QR algorithm. Lanczos iteration (symmetric case) and Arnoldi iteration (non symmetric case).

Research and Events

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Defended Theses

  • Smoothing and Interpolation on the Essential Manifold
      Maria de Fátima Alves de Pina (June 2020)
      Fátima Silva Leite
  • A semidefinite approach to algebraic optimization
      Mina Saee Bostanabad (February 2020)
      João Gouveia
  •   Jorge Fernando Valentim Soares (January 2020)
      Jorge Milhazes de Freitas
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