4 papers · 1 filter
Dynamics of multiplicative groups over fields and Folner-Kloosterman sums
Michael Björklund, Alexander Fish
For two countably infinite fields whose multiplicative groups are isomorphic, we examine invariant couplings between the actions that these groups induce on the additive Pontryagin…
Periodicity of point processes in abelian groups without lattices
Nachi Avraham-Re'em, Michael Björklund, Rickard Cullman
We investigate the intersection covolume of cross sections for probability preserving actions of a class of abelian groups without lattices, including -adic groups and the group…
Locally integrable cross sections and their intersection covolume
Nachi Avraham-Re'em, Michael Björklund, Rickard Cullman
We study systematically cross sections of probability preserving actions of unimodular groups and their associated transverse measures, and introduce the invariant \emph{intersecti…
Ehrhart spectra of large subsets of
Michael Björklund, Rickard Cullman, Alexander Fish
This paper introduces and studies the Ehrhart spectrum of a set , defined as the set of all Ehrhart polynomials of simplices with vertices in , general…