A note on the set $\boldsymbol{A(A+A)}$
Number Theory
2019-05-29 v2
Abstract
Let a large enough prime number. When is a subset of of cardinality , then an application of Cauchy-Davenport Theorem gives . In this note, we improve on this and we show that if implies . In the opposite direction we show that there exists a set such that and .
Cite
@article{arxiv.1811.08869,
title = {A note on the set $\boldsymbol{A(A+A)}$},
author = {Pierre-Yves Bienvenu and François Hennecart and Ilya Shkredov},
journal= {arXiv preprint arXiv:1811.08869},
year = {2019}
}
Comments
10 pages