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Shi-Qiang Chen

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Preprint Sep 2026

On a problem of Nathanson related to strongly minimal asymptotic bases of order $h$

Let $h\geq2$ be an integer and let $1/h<\theta\leq1/(h-1)$. In this paper, we prove that there exists a strongly minimal asymptotic basis $A$ of order $h$ such that $A(x)\asymp x^\theta$. This solves a problem posed by Nathanson in 1988.

Shi-Qiang Chen · 0 citations
Preprint Sep 2026

On a problem of Erd\H{o}s and Nathanson related to minimal asymptotic bases of order $h$

Let $h\geq 3$ be an integer and $0<\alpha<1/h$. In this paper, we prove that there exists a minimal asymptotic basis of order $h$ with asymptotic density $\alpha$. This solves an open problem posed by Erd\H{o}s and Nathanson in 1988.

Shi-Qiang Chen, Quan-Hui Yang · 0 citations
Preprint Sep 2026

On a problem of Nathanson related to minimal asymptotic bases and maximal asymptotic nonbases

Let $\mathbb{N}_0=\{0,1,2,\ldots\}$ and let $h\ge2$ be an integer. For a set $A\subseteq\mathbb{N}_0$, write $hA$ for the set of all sums of $h$, not necessarily distinct, elements of $A$. In this paper, we prove that for every $h\ge2$, there is a partition $\mathbb{N}_0=A\sqcup B$ such that $A$ is a minimal asymptotic...

Shi-Qiang Chen · 0 citations
Preprint Jul 2026

On the size of $h$-fold sumsets

Let $h$ be a positive integer, and let $A$ be a finite set of integers. We derive an exact formula for $|hA|$. Furthermore, let $A=\{0,1,\ldots,s,a,b\}$, $1\leq s<a<b$, and write $b=qa+r$ with $0\leq r<a$. By using generating function, we prove that $|hA|$ equals a definite explicit formula expressed in terms of certai...

Shi-Qiang Chen, Quan-Hui Yang · 0 citations

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