Multiplicativity of sets
Expanding the known multiplicative properties of large difference sets yields a new, quantitative proof on the structure of product sets.
On some multiplicative properties of large difference sets
In our paper we study multiplicative properties of difference sets for large sets in the case of composite . We obtain a quantitative version of a result of A. Fish about the structure of the product sets . Also, we show that the multiplicative covering number of any difference set is always small.