Integral Concentration of idempotent trigonometric polynomials with gaps

Aline Bonami, Szilárd Gy. Révész

We prove that for all p>1/2 there exists a constant ${\gamma }_p>0$ such that, for any symmetric measurable set of positive measure $E\subset \TT$ and for any $\gamma <{\gamma }_p$, there is an idempote…