| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5778035 | Topology and its Applications | 2017 | 22 Pages |
Abstract
A subgroup H of R is characterized if H=Ïu(R):={xâR:unxâ0modZ} for some sequence u in R. Given two sequences u and v in R, we find conditions under which Ïu(R) is contained or not in Ïv(R). As a by-product of our main theorems, we find a known result by EliaÅ¡ on inclusions of characterized subgroups of T, motivated by problems in harmonic analysis.
Related Topics
Physical Sciences and Engineering
Mathematics
Geometry and Topology
Authors
Giuseppina Barbieri, Anna Giordano Bruno, Hans Weber,