Sayan Goswami

ON DIFFERENCE SETS OF DENSE SUBSETS OF Z 2 $\mathbb {Z}^2$ double struck upper Z squared

Abstract We study the structure of the difference set E − E $E - E$ upper E minus upper E for subsets E ⊆ Z 2 $E \subseteq \mathbb {Z}^2$ upper E subset of or equal to double struck upper Z squared of positive upper Banach density. Fish [‘On product of difference sets for sets of...