Stability estimates for reconstruction from the Fourier transform on the ball
Résumé
Abstract We prove Hölder-logarithmic stability estimates for the problem of finding an integrable function v on ℝ d {{\mathbb{R}}^{d}} with a super-exponential decay at infinity from its Fourier transform ℱ v {\mathcal{F}v} given on the ball B r {B_{r}} . These estimates arise from a Hölder-stable extrapolation of ℱ v {\mathcal{F}v} from B r {B_{r}} to a larger ball. We also present instability examples showing an optimality of our results.
We prove Hölder-logarithmic stability estimates for the problem of finding an integrable function v on R^d with a super-exponential decay at infinity
from its Fourier transform Fv given on the ball B_r. These estimates arise from a Hölder-stable extrapolation of Fv from B_r to a larger ball.
We also present instability examples showing an optimality of our results.
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