English

On subradically sifted sums related to Alladi's higher order duality between prime factors

Number Theory 2026-01-16 v1

Abstract

In this paper, I utilize a variant of the Selberg--Delange method to find quantitative estimates of the sums Mk,ω(x,y)=p1(n)>ynxμ(n)(ω(n)1k1),M_{k,\omega}(x,y)=\sum_{\substack{p_{1}(n)> y\\ n\leq x} } \mu(n) {\omega(n)-1\choose k-1}, where yy can grow with xx but we must have yY0exp(plogx(loglog(x+1))1+ϵ)y\leq Y_0\exp(\mathscr{p}\frac{\log x}{(\log\log (x+1))^{1+\epsilon}}) with Y0,p,ϵ>0Y_0,\mathscr{p},\epsilon>0. Moreover, I give preliminary upper bounds for the general range 1.9yx1k1.9\leq y\leq x^{\frac{1}{k}}. In addition, I formalize the notions of subradical and radical dominance and discuss their relevance to the analytic approach of the study of arithmetic functions. Lastly, I give a fascinating formula related to the derivatives of the gamma function and the Hankel contour, which should be relevant for those employing the Selberg--Delange method to obtain higher-order terms.

Keywords

Cite

@article{arxiv.2601.10636,
  title  = {On subradically sifted sums related to Alladi's higher order duality between prime factors},
  author = {Yazan Alamoudi},
  journal= {arXiv preprint arXiv:2601.10636},
  year   = {2026}
}