Refined Estimates Concerning Sumsets Contained in the Roots of Unity
Brandon Hanson, Giorgis Petridis·2019-05-22·via math.CO updates on arXiv.org
We prove that the clique number of the Paley graph is at most $\sqrt{p/2} + 1$, and that any supposed additive decompositions of the set of quadratic residues can only come from co-Sidon sets.