3 papers
math.OA2026
Elliptic Boundary Value Problems and Partial Group Actions
Eske Ewert, Anton Yu. Savin, Elmar Schrohe
We consider a smooth compact manifold with boundary, , embedded in a smooth manifold of the same dimension on which an amenable group acts by isometries. We do not assume $M…
math.AP2024
Shubin calculi for actions of graded Lie groups
Eske Ewert, Philipp Schmitt
In this article, we develop a calculus of Shubin type pseudodifferential operators on certain non-compact spaces, using a groupoid approach similar to the one of van Erp and Yuncke…
math-ph2018
Coarse geometry and topological phases
Eske Ellen Ewert, Ralf Meyer
We propose the Roe C*-algebra from coarse geometry as a model for topological phases of disordered materials. We explain the robustness of this C*-algebra and formulate the bulk-ed…