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p-adic Stirling numbers of the second kind

Number Theory 2013-07-30 v1 Combinatorics

Abstract

Let S(n,k) denote the Stirling numbers of the second kind. We prove that the p-adic limit of S(p^e a + c, p^e b + d) as e goes to infinity exists for all integers a, b, c, and d. We call the limiting p-adic integer S(p^\infty a + c, p^\infty b + d). When a equiv b mod (p-1) or d \le 0, we express them in terms of p-adic binomial coefficients introduced in a recent paper.

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Cite

@article{arxiv.1307.7687,
  title  = {p-adic Stirling numbers of the second kind},
  author = {Donald M. Davis},
  journal= {arXiv preprint arXiv:1307.7687},
  year   = {2013}
}

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13 pages