The open Golod–Shafarevich subgroup conjecture for pro-p extensions

Let pp be a prime, let KK be a number field, and let L/KL/K be an infinite pro-pp extension ramified at finitely many primes, none above pp. A pro-pp group is Golod–Shafarevich if it satisfies the strict Golod–Shafarevich inequality in the sense defined in the source.

Open Golod–Shafarevich subgroup conjecture. The group Gal(L/K)\operatorname{Gal}(L/K) contains an open Golod–Shafarevich pro-pp subgroup.

This is a strengthening of the non-strict virtually Golod–Shafarevich conjecture and is introduced because the strict inequality avoids the flaw discussed in the source. Its status is open.

Sources & referencesView supporting material

Primary source

Yufan Luo, “Remarks on the Boston Unramified Fontaine-Mazur Conjecture, II”, arXiv:2601.20395 (2026).

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