Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4673132 | Indagationes Mathematicae | 2011 | 4 Pages |
Abstract
For a sequence of rectangles R=(Rk)k=1∞ in Nd and a subset FF of Nd, when the limit exists set d(F,R)=limk→∞|F∩Rk||Rk|. Suppose the subset EE of Nd has positive Banach density B(E)B(E). We give conditions on RR to ensure there exists a subset SS of Nd with d(S,R)≥B(E)d(S,R)≥B(E) such that for each finite subset {m1,…,mr}{m1,…,mr} of SS we have B(E∩(E+m1)∩⋯∩(E+mr))>0.B(E∩(E+m1)∩⋯∩(E+mr))>0.
Keywords
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Physical Sciences and Engineering
Mathematics
Mathematics (General)
Authors
R. Nair,