3 papers
math.AP2026
Holographic X-ray Phase Contrast Imaging with Partial Coherence: Uniqueness and Reconstructions from Intensity Correlations
Thorsten Hohage, Milad Karimi, Björn Müller
Holographic coherent X-ray imaging enables nanoscale imaging of biological cells and tissues, rendering both phase and absorption contrast, i.e. real and imaginary parts of the ref…
math.NA2026
Long-time behavior of exact and numerical solutions of stochastic evolution equations on the sphere
David Cohen, Björn Müller, Andrea Papini
We investigate the long-time behavior of exact solutions and numerical approximations of linear stochastic evolution equations defined on the sphere. We focus on three classical mo…
math.PR2025
Isotropic Q-fractional Brownian motion on the sphere: regularity and fast simulation
Annika Lang, Björn Müller
As an extension of isotropic Gaussian random fields and Q-Wiener processes on d-dimensional spheres, isotropic Q-fractional Brownian motion is introduced and sample Hölder regular…