A note on a problem of Ma and Chen

Bing-Ling Wu, Wu-Xia Ma

Let $S=(s_1,s_2,\cdots )$ be a strictly increasing sequence of positive integers. For any real number $\alpha >0$, let $S_{\alpha }=(\lfloor \alpha s_1\rfloor ,\lfloor \alpha s_2\rfloor ,\cdots )$. We prove that…