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TWO SUPERCONGRUENCES RELATED TO MULTIPLE HARMONIC SUMS

Part of: Sequences and sets Elementary number theory

Published online by Cambridge University Press:  28 January 2021

ROBERTO TAURASO Open the ORCID record for ROBERTO TAURASO [Opens in a new window]
ROBERTO TAURASO*
Affiliation:
Dipartimento di Matematica, Università di Roma ‘Tor Vergata’, via della Ricerca Scientifica 1, 00133Roma, Italy
*
e-mail: tauraso@mat.uniroma2.it
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Abstract

Let p be a prime and let x be a p-adic integer. We prove two supercongruences for truncated series of the form

$$\begin{align*}\sum_{k=1}^{p-1} \frac{(x)_k}{(1)_k}\cdot \frac{1}{k}\sum_{1\le j_1\le\cdots\le j_r\le k}\frac{1}{j_1^{}\cdots j_r^{}}\quad\mbox{and}\quad \sum_{k=1}^{p-1} \frac{(x)_k(1-x)_k}{(1)_k^2}\cdot \frac{1}{k}\sum_{1\le j_1\le\cdots\le j_r\le k}\frac{1}{j_1^{2}\cdots j_r^{2}}\end{align*}$$
which generalise previous results. We also establish q-analogues of two binomial identities.

Keywords

Bernoulli numbercentral binomial coefficientcongruenceharmonic sum

MSC classification

Primary: 11B65: Binomial coefficients; factorials; $q$-identities
Secondary: 11A07: Congruences; primitive roots; residue systems 11B68: Bernoulli and Euler numbers and polynomials
Type
Research Article
Information
Bulletin of the Australian Mathematical Society , Volume 103 , Issue 3 , June 2021 , pp. 379 - 389
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Copyright
© 2021 Australian Mathematical Publishing Association Inc.

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References

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