Limsup-one conjecture for p-adic torsion growth

Let Kreal{\mathcal K}_{\rm real} be the set of all totally real number fields, let DKD_K be the discriminant of KK, and fix a prime p2p\geq 2. For each KK, let TK{\mathcal T}_K be the torsion group of the Galois group of the maximal abelian pp-ramified pro-pp-extension of KK under Leopoldt's conjecture. Limsup-one conjecture.

lim supKKreal,DKvp(#TK)log(p)log(DK)=1.\limsup_{K\in{\mathcal K}_{\rm real},\,D_K\to\infty}\frac{v_p(\# {\mathcal T}_K)\log_\infty(p)}{\log_\infty(\sqrt{D_K})}=1.

This conjecture predicts that the principal p-adic Brauer–Siegel upper-bound scale is asymptotically sharp over all totally real fields. The source offers it as a proposal based on numerical behavior and gives no proof.

Sources & referencesView supporting material

Primary source

Georges Gras, “Heuristics in direction of a p-adic Brauer–Siegel theorem”, arXiv:1801.04214 (2018).

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