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Browsing Mathematics by Author "Reichel, Lothar"

Browsing Mathematics by Author "Reichel, Lothar"

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  • Adaptive cross approximation for ill-posed problems 
    Mach, Thomas; Reichel, Lothar; Van Barel, Marc; Vandebril, R. (Journal of Computational and Applied Mathematics, 2016-09-01)
    Integral equations of the first kind with a smooth kernel and perturbed right-hand side, which represents available contaminated data, arise in many applications. Discretization gives rise to linear systems of equations ...
  • Convergence rates for inverse-free rational approximation of matrix functions 
    Jagels, Carl; Mach, Thomas; Reichel, Lothar; Vandebril, Raf (Linear Algebra and Its Applications, 2016-12-01)
    This article deduces geometric convergence rates for approximating matrix functions via inverse-free rational Krylov methods. In applications one frequently encounters matrix functions such as the matrix exponential or ...