The Index-\(\lambda\)-Closures of the Subsets of \({3,…,10}\) Including \(3\)

Abstract

Gronau, Mullin and Pietsch determined the exact closure of index one of all subsets \(K\) of \(\{3,\ldots,10\}\) which include \(3\). We extend their results to obtain the exact closure of such \(K\) for all indices.