Mossinghoff–Trudgian sign-change conjecture for weighted Liouville sums

Let λ(n)\lambda(n) be the Liouville function and, for αR\alpha\in\mathbb{R}, define the weighted summatory function

Lα(x)=nxλ(n)nα.L_{\alpha}(x)=\sum_{n\leq x}\frac{\lambda(n)}{n^{\alpha}}.

Mossinghoff–Trudgian conjecture. For 0<α<1/20<\alpha<1/2, the weighted sum Lα(x)L_{\alpha}(x) changes sign infinitely often. The source notes that this has been proved unconditionally for α=0\alpha=0 and α=1\alpha=1, while no such sign changes had been found computationally in the stated open range.

Sources & referencesView supporting material

Primary source

Peter Humphries, “The Distribution of Weighted Sums of the Liouville Function and Pólya's Conjecture”, arXiv:1108.1524 (2012).

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