Oussama Hamza

activity

20202026

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math.NT2026

Tame Galois Groups, Linking Numbers and Mildness

Julian Feuerpfeil, Oussama Hamza, Donghyeok Lim

Let $p$ be an odd prime and let $S$ be a set of tame primes. We denote by $G_{S}$ the Galois group of the maximal pro- $p$ extension of $Q$ unramified outside $S$ . We prove t…

math.GR2026

Filtrations and cohomology on graph products

Oussama Hamza

Let $p$ be a prime. We resolve a question posed by Mináč-Rogelstad-Tân. We relate the Zassenhaus and the lower central series of pro- $p$ groups under a torsion-freeness condition.…