H. Harbrecht

activity

20152024

most citedA Fast Isogeometric BEM for the Three Dimensional Laplace- and Helmholtz Problems

61 citations · 89 across the 20 of their papers we have counts for

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Showing 2022 · math.NAShow all

3 papers · 2 filters

math.NA2022

Multiresolution kernel matrix algebra

H. Harbrecht, M. Multerer, O. Schenk +1

We propose a sparse algebra for samplet compressed kernel matrices, to enable efficient scattered data analysis. We show the compression of kernel matrices by means of samplets pro…

math.NA2022

Uncertainty quantification for random domains using periodic random variables

Harri Hakula, Helmut Harbrecht, Vesa Kaarnioja +2

We consider uncertainty quantification for the Poisson problem subject to domain uncertainty. For the stochastic parameterization of the random domain, we use the model recently in…

math.NA2022★ 1 cited

Low-rank approximation of continuous functions in Sobolev spaces with dominating mixed smoothness

Michael Griebel, Helmut Harbrecht, Reinhold Schneider

Let $Ω_{i} \subset R^{n_{i}}$ , $i = 1, \dots, m$ , be given domains. In this article, we study the low-rank approximation with respect to $L^{2} (Ω_{1} \times \dots \times Ω_{m})$ of functions…