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arXiv 1403.5232math.NT
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截断超几何级数中的超同余

Some supercongruences occurring in truncated hypergeometric series

Ling Long, Ravi Ramakrishna

摘要:

超同余是指终止超几何级数与$p$ -adic Γ函数的同元之间的同余,其强于人们期望用交换形式群定律证明的那些同元。我们利用经典的超几何变换公式证明了一些这样的超同余。这些公式(见附录),其中大多数是几十年或几百年前的,允许我们将终止级数写成$Γ$ -值的乘积的比率。在这一点上,总和已经成为一种共识。将这些$Γ$ -同余式写成$Γ_p$ -同余式,我们就处于非常适合证明$p$ -adic同余式的情形。这些$Γ_p$ -函数可以用它们的泰勒级数展开式来近似为$p$ -代数。有时会有低阶项的抵消,导致更强的同余。使用这种技术,我们证明,除其他事项外,猜想Kibelbek和加强版本的猜想范哈姆。

英文摘要:

For the purposes of this paper supercongruences are congruences between terminating hypergeometric series and quotients of $p$-adic Gamma functions that are stronger than those one can expect to prove using commutative formal group laws. We prove a number of such supercongruences by using classical hypergeometric transformation formulae. These formulae (see the appendix), most of which are decades or centuries old, allow us to write the terminating series as the ratio of products of of $Γ$-values. At this point sums have become quotients. Writing these $Γ$-quotients as $Γ_p$-quotients, we are in a situation that is well-suited for proving $p$-adic congruences. These $Γ_p$-functions can be $p$-adically approximated by their Taylor series expansions. Sometimes there is cancelation of the lower order terms, leading to stronger congruences. Using this technique we prove, among other things, a conjecture of Kibelbek and a strengthened version of a conjecture of van Hamme.

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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