Hanna Oppelmayer

collaborators

3 papers

math.PR2026

Cone-Additive Functions for Random Walks on Free Products of Graphs

Lorenz A. Gilch, Hanna Oppelmayer

We define cone-additive functions for random walks on free products of countable graphs. These functions satisfy a limit theorem under mild assumptions. In fact, cone-additivity is…

math.OA2024

On the amenable subalgebras of group von Neumann algebras

Tattwamasi Amrutam, Yair Hartman, Hanna Oppelmayer

We approach the study of sub-von Neumann algebras of the group von Neumann algebra $L I^$ for countable groups $I^$ from a dynamical perspective. It is shown that $L (I^)$ admits a m…

math.DS2024

Relative stationary dynamical systems

Tattwamasi Amrutam, Martin KlÃ¶tzer, Hanna Oppelmayer

Let $G$ be a locally compact second countable group equipped with an admissible non-degenerate Borel probability measure $I^¼$ . We generalize the notion of $I^¼$ -stationary systems t…