Notes on the B+B+t theorem
Updated: 2024-04-24 15:02:49
A recent paper of Kra, Moreira, Richter, and Robertson established the following theorem, resolving a question of Erdös. Given a discrete amenable group , and a subset of , we define the Banach density of to be the quantity where the supremum is over all Følner sequences of . Given a set in , we […]