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arXiv · 0812.3089

Binomial coefficients and the ring of p-adic integers

Zhi-Wei Sun·Wei Zhang
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Abstract

Let k>1 be an integer and let p be a prime. We show that if $p^a\le k<2p^a$ or $k=p^aq+1$ (with 2q<p) for some a=1,2,..., then the set {\binom{n}{k}: n=0,1,2,...} is dense in the ring Z_p of p-adic integers, i.e., it contains a complete system of residues modulo any power of p.

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Zhi-Wei Sun, Wei Zhang. 2011-01-25. Binomial coefficients and the ring of p-adic integers. https://arxiv.org/abs/0812.3089

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