A theorem of Følner asserts that for any set A ⊂ Z of positive upper density there is a Bohr neigbourhood B of 0 such that B \ (A − A) has zero density. We use ...

Abstract. A theorem of Følner asserts that for any set A ⊂ Z of positive upper density there is a Bohr neigbourhood B of 0 such that B \ (A − A) has.

Abstract. A theorem of Følner asserts that for any set A ⊂ Z of positive upper density there is a Bohr neigbourhood B of 0 such.

A theorem of Følner asserts that for any set A ⊂ Z of positive density there is a Bohr neigbourhood B of 0 such that B \ (A − A) has zero density.

Additive structure of difference and iterated difference sets are investigated. In this survey we collect results and some applications of theorems of ...

Jan 3, 2017 · A theorem of Folner asserts that for any set A subset of Z of positive upper density there is a Bohr neigbourhood B of 0 such that B \ (Lambda - ...

First difference sets and Bohr sets II; Følner's theorem. 263. The sequence {xn}∞ n=1 will be defined inductively. Since the length of the red-blue pairs of ...

Additive structure of difference and iterated difference sets are investigated. In this survey we collect results and some applications of theorems of ...

Ruzsa, Additive structure of difference sets and a theorem of Følner, Australas. J. Combin. 64 (2016), 437–443. MR 3457812 · Wen Huang, Song Shao, and ...

Oct 17, 2024 · In this short paper, we give a proof of Følner's Theorem for arbitrary amenable groups using (relatively) classical results from functional ...