Number theory
On the square-root partition function
[Sur la fonction de partition en racines carrées]
Comptes Rendus. Mathématique, Tome 353 (2015) no. 4, pp. 287-290.

La fonction de partition bien connue p(n), qui compte le nombre de solutions de l'équation n=a1++ak en entiers 1a1ak, a une longue histoire. Nous étudions dans cette Note une nouvelle fonction de partition. Soit q(n) le nombre de solutions de l'équation n=[a1]++[ak] en entiers 1a1ak, où [x] désigne la partie entière de x. Nous montrons que exp(c1n2/3q(n)exp(c2n2/3) pour deux constantes positives explicites c1 et c2.

The well-known partition function p(n), which is the number of solutions of the equation n=a1++ak with integers 1a1ak, has a long research history. In this note, we investigate a new partition function. Let q(n) be the number of solutions of the equation n=[a1]++[ak] with integers 1a1ak, where [x] denotes the integral part of x. We prove that exp(c1n2/3)q(n)exp(c2n2/3) for two explicit positive constants c1 and c2.

Reçu le :
Accepté le :
Publié le :
DOI : 10.1016/j.crma.2015.01.013
Chen, Yong-Gao 1 ; Li, Ya-Li 1

1 School of Mathematical Sciences and Institute of Mathematics, Nanjing Normal University, Nanjing 210023, PR China
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Chen, Yong-Gao; Li, Ya-Li. On the square-root partition function. Comptes Rendus. Mathématique, Tome 353 (2015) no. 4, pp. 287-290. doi : 10.1016/j.crma.2015.01.013. http://archive.numdam.org/articles/10.1016/j.crma.2015.01.013/

[1] Balasubramanian, R.; Luca, F. On the number of factorizations of an integer, Integers, Volume 11 (2011) (A12, 5 p)

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This work was supported by the National Natural Science Foundation of China (No. 11371195) and PAPD.