Relative Lehmer conjecture for heights relative to divisible subgroups

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Let g1,…,gn∈Q‾×g_1,\dots,g_n\in\overline{\mathbb{Q}}^\times and let Γ=⟨g1,…,gn⟩div\Gamma=\langle g_1,\dots,g_n\rangle^{\mathrm{div}} be a finite-rank divisible subgroup of Gm(Q‾)\mathbb{G}_m(\overline{\mathbb{Q}}). Define

hΓ(α)=inf⁡γ∈Γh(α/γ),h_\Gamma(\alpha)=\inf_{\gamma\in\Gamma}h(\alpha/\gamma),

and let k=Q(g1,…,gn)k=\mathbb{Q}(g_1,\dots,g_n). Relative Lehmer conjecture. For every ε>0\varepsilon>0, there exists CΓ(ε)>0C_\Gamma(\varepsilon)>0 such that, for every α∈Gm(Q‾)∖Γ\alpha\in\mathbb{G}_m(\overline{\mathbb{Q}})\setminus\Gamma,

hΓ(α)≥CΓ(ε)[kcyc(α):kcyc]2+ε.h_\Gamma(\alpha)\geq\frac{C_\Gamma(\varepsilon)}{[k^{\mathrm{cyc}}(\alpha):k^{\mathrm{cyc}}]^{2+\varepsilon}}.

This is presented as a weaker version of the weak form of Rémond's generalized Lehmer conjecture, and its resolution is not established by the supplied text.

References

Primary source

Robert Grizzard, “Remarks on Rémond's generalized Lehmer problems”, arXiv:1710.11614 (2017).

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