Geodesic
On a new identity for double sum related to Bernoulli numbers
Žurnal Sibirskogo federalʹnogo universiteta. Matematika i fizika, Tome 17 (2024) no. 5, pp. 609-612

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Let $m$, $n$ and $l$ be integers with $0\leqslant l\leqslant m+n$. It is the main purpose of this paper to give an identity for the sum: $$\mathop{\sum_{a=0}^{m} \sum_{b=0}^{n}}_{a+b\geqslant m+n-l}B_{m-a}B_{n-b}\frac{\binom{m}{a}\binom{n}{b}}{a+b+1}\binom{a+b+1}{m+n-l},$$ where $B_m$ $(m=0,1,2,\dots)$ is the Bernoulli number. As corollary we prove that the above sum equal to $\dfrac{1}{2}$ when $l=0$.
Keywords: Bernoulli number, generating function.
Mots-clés : Bernoulli polynomial 
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     title = {On a new identity for double sum related to {Bernoulli} numbers},
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Brahim Mittou. On a new identity for double sum related to Bernoulli numbers. Žurnal Sibirskogo federalʹnogo universiteta. Matematika i fizika, Tome 17 (2024) no. 5, pp. 609-612. http://geodesic.mathdoc.fr/item/JSFU_2024_17_5_a5/