Minimal asymptotic \(g\)-adic bases from arbitrary partitions

Abstract

Let $g>h\ge2$ be integers. For a nonempty set $W\subseteq\N$, let $\mathcal F^*(W)$ denote the set of its finite nonempty subsets. Let $$A_g(W)=\left\{\sum_{f\in F}a_fg^f: 1\leq a_f \leq g-1,F \in \mathcal F^*(W)\right\},$$ and let $\N=W_1\sqcup\cdots\sqcup W_h$ be a partition into infinite sets. We prove that $A=\bigcup_{i=1}^h A_g(W_i)$ is a minimal asymptotic basis of order $h$ for every such partition.