On L1-norms for non-harmonic trigonometric polynomials with sparse frequencies

Philippe Jaming, Karim Kellay, Chadi Saba +1

In this paper we show that, if an increasing sequence $\hat{I}›=(\hat{I}{»}_k{)}_{k\in \mathbb{Z}}$ has gaps going to infinity $\hat{I}{»}_{k+1}-\hat{I}{»}_k\to +\infty$ when $k\to \pm \infty$, then for every $T>0$…