On a problem of Nathanson on minimal asymptotic bases

On a problem of Nathanson on minimal asymptotic bases
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DOI:
10.1016/j.jnt.2020.07.014
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发表时间:
2021
影响因子:
0.7
通讯作者:
Cui-Fang Sun
Cui-Fang Sun
中科院分区:
数学3区
文献类型:
--
作者:
Cui-Fang Sun

文献摘要

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设N表示所有非负整数的集合,A是N的子集。设h是一个整数,h≥ 2。设n∈ N,rh(A,n)=<${(a1,.,ahe)∈ ahe:a1 +<$+ ahe = n}.称集合A为h阶渐近基,如果对所有充分大的整数n,rh(A,n)≥ 1.一个h阶渐近基A是极小的,如果A的任何真子集都不是h阶渐近基。1988年,Nathanson提出了一个关于h阶极小渐近基的问题。最近,Chen和Tang通过构造N的一个特殊划分,证明了当h≥ 4时,该问题的答案是否定的。本文给出了极小渐近基的一种新构造。这一结构扩展了我们对内桑森问题的理解。
Let N denote the set of all nonnegative integers and A be a subset of N. Let h be an integer with h≥ 2. Let n∈ N and r h (A, n)=♯{(a 1,…, a h)∈ A h: a 1+⋯+ a h= n}. The set A is called an asymptotic basis of order h if r h (A, n)≥ 1 for all sufficiently large integer n. An asymptotic basis A of order h is minimal if no proper subset of A is an asymptotic basis of order h. In 1988, Nathanson posed a problem on minimal asymptotic bases of order h. Recently, Chen and Tang showed that the answer to the problem is negative for h≥ 4 by constructing a special partition of N. In this paper, we give a new construction of minimal asymptotic bases. This construction expands our understanding on the problem of Nathanson.