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- Open Access
Note on two extensions of the classical formula for sums of powers on arithmetic progressions
- José A Adell^{1}Email author and
- Alberto Lekuona^{1}
https://doi.org/10.1186/s13662-017-1250-y
© The Author(s) 2017
- Received: 3 March 2017
- Accepted: 20 June 2017
- Published: 27 June 2017
Abstract
We give two extensions of the classical formula for sums of powers on arithmetic progressions. This is achieved by using an identity involving binomial mixtures, which can be viewed as a generalization of the binomial transform.
Keywords
- sum of powers formula
- forward difference
- binomial mixture
- binomial transform
- Bernoulli polynomials
MSC
- 05A19
- 60C05
1 Introduction
2 Main results
Theorem 2.1
Every choice of the function f and the random variable T in Theorem 2.1 gives us a different binomial identity. Whenever the probability density of T includes the uniform density on \((0,1)\) as a particular case, we are able to obtain a different extension of formula (3). In this respect, we give the following two corollaries of Theorem 2.1.
Corollary 2.2
Corollary 2.3
Observe that both corollaries extend formula (3) by choosing \(f=\psi_{m}\) and \(p=q=1\) in Corollary 2.2, and \(f=\psi_{m}\) and \(j=1\) in Corollary 2.3.
3 The proofs
Proof of Theorem 2.1
Proof of Corollary 2.2
Proof of Corollary 2.3
Declarations
Acknowledgements
The authors would like to thank the reviewers for their careful reading of the manuscript and for their suggestions, which greatly improved the final outcome. This work was supported by research grants MTM2015-67006-P, DGA (E-64), and by FEDER funds.
Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Authors’ Affiliations
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