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Building weight-free Følner sets for Yu's Property A in coarse geometry
Published 10 May 2024 in math.MG | (2405.06438v2)
Abstract: In this note we study the natural question of when the generalised F{\o}lner sets exhibiting property A can be chosen to be subsets of the space itself. We show that for many property A spaces $X$, this is indeed possible. Specifically this holds: for all discrete bounded geometry metric spaces which coarsely have all components unbounded; for all countable discrete groups; and for all box spaces.
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