Matthieu Dolbeault

activity

20202026

most citedRandomized least-squares with minimal oversampling and interpolation in general spaces

1 citations · 1 across the 6 of their papers we have counts for

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math.NA2023★ 1 cited

Randomized least-squares with minimal oversampling and interpolation in general spaces

Abdellah Chkifa, Matthieu Dolbeault

In approximation of functions based on point values, least-squares methods provide more stability than interpolation, at the expense of increasing the sampling budget. We show that…

math.AP2023

Reduced order modeling for elliptic problems with high contrast diffusion coefficients

Albert Cohen, Matthieu Dolbeault, Agustin Somacal +1

We consider the parametric elliptic PDE $- div (a (y) \nabla u) = f$ on a spatial domain $Ω$ , with $a (y)$ a scalar piecewise constant diffusion coefficient taking any positive val…