Thin Subsets of Groups

• Published in: Український математичний журнал
• Date: 2013
• Main Authors: Protasov, I.V., Slobodyanyuk, S.
• Format: Article
• Language: English
• Published: Інститут математики НАН України 2013
• Subjects: Статті
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/165633
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Thin Subsets of Groups / I.V. Protasov, S. Slobodyanyuk // Український математичний журнал. — 2013. — Т. 65, № 9. — С. 1245–1253. — Бібліогр.: 14 назв. — англ.

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 Abelian group G of cardinality ℵn, n = 0, 1, . . . can be split into ≤ mⁿ⁺¹ 1-...