Protasov, I.V.; Slobodyanyuk, S.
(Український математичний журнал, 2013)
For a group G and a natural number m, a subset A of G is called m-thin if, for each finite subset F of G, there exists a finite subset K of G such that |Fg ∩ A| ≤ m for all g ∈ G \ K. We show that each m-thin subset of an ...