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Search: authors:"Karl Kunisch"

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Robust \(\ell _1\) Approaches to Computing the Geometric Median and Principal and Independent Components

mathematical image processing with emphasis on MRI applications. Karl Kunisch is a professor and head of department of mathematics at the University of Graz, and Scientific Director of the Radon Institute of

The Output Least Squares Identifiability of the Diffusion Coefficient from an H1–Observation in a 2–D Elliptic Equation

Output least squares stability for the diffusion coefficient in an elliptic equation in dimension two is analyzed. This guarantees Lipschitz stability of the solution of the least squares formulation with respect to perturbations in the data independently of their attainability. The analysis shows the influence of the flow direction on the parameter to be estimated. A scale...