2 papers
math.DS2026
Bohr sets in sumsets III: expanding difference sets and almost Bohr sets
Pierre-Yves Bienvenu, John T. Griesmer, Anh N. Le +1
Let be a discrete abelian group. Følner showed that if has positive upper Banach density, then contains an almost Bohr set -- a set of the form $B \set…
math.DS2026
A structure theorem for polynomial return-time sets in minimal systems
Daniel Glasscock, Andreas Koutsogiannis, Anh N. Le +3
We investigate the structure of return-time sets determined by orbits along polynomial tuples in minimal topological dynamical systems. Building on the topological characteristic f…