Mattes Wittig

collaborators

2 papers

math.SP2026

Spectral and Pseudospectral Approximation of Finite-Interaction-Range Operators in Doubling Metric Measure Spaces

Mattes Wittig

We study bounded finite-interaction-range operators $H$ on $ℓ^{2} (Γ)$ , where $Γ$ is a uniformly discrete subset of a left-invariant doubling metric measure space $(X, d, μ)$ . Our go…

math.FA2025

A second order approach to the Kato square root problem on open sets

Sebastian Bechtel, Cody Hutcheson, Tim Schmatzler +2

We obtain the Kato square root property for coupled second-order elliptic systems in divergence form subject to mixed boundary conditions on an open and possibly unbounded set in $…