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arXiv 0812.1259math.NT
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关于$p^2+b^2+2^n$和$b_1^2+b_2^2+2^{n^2}$形式的整数

On the integers of the form $p^2+b^2+2^n$ and $b_1^2+b_2^2+2^{n^2}$

Hao Pan, Wei Zhang

摘要:

证明了和集{p^2+b^2+2^n:p是素数,b,n \in N}有正的下密度.我们还构造了一个具有奇模的剩余类,它不包含p^2+b^2+2^n形式的整数.对于和集{b_1^2+b_2^2+2^{n^2}:b_1,b_2,n \in N}也得到了类似的结果.

英文摘要:

We prove that the sumset {p^2+b^2+2^n: p is prime and b,n\in N} has positive lower density. We also construct a residue class with odd modulo, which contains no integer of the form p^2+b^2+2^n. And similar results are established for the sumset {b_1^2+b_2^2+2^{n^2}: b_1,b_2,n\in N}.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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