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20232026
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math.NT2026

Local Minkowski units in non-abelian extensions with cyclic Sylow -subgroups

Wan Lee, Donghyeok Lim

We establish a criterion for the existence of a local Minkowski unit at that applies to all Galois extensions with Galois group isomorphic to the direct product of a non--gr…

math.NT2026

Construction Of Non-Odd Galois Representations With Large Image

Donghyeok Lim, Christian Maire

In this work, we construct Galois representations with large image that are not GL r -odd (or, equivalently, not regular at infinity). More precisely, for every prime p {\v e} 3, e…

math.NT2025

Massey products and unipotent extensions with restricted ramification

Oussama Hamza, Donghyeok Lim, Christian Maire

We fix a prime p and construct new cases of pro-p extensions of number fields with restricted ramification and splitting, whose Galois groups decompose as coproducts of pro-p absol…

math.NT2024

On Krull-Schmidt decompositions of unit groups of number fields

Asuka Kumon, Donghyeok Lim

We prove that the Krull-Schmidt decomposition of the Galois module of the -adic completion of algebraic units is controlled by the primes that are ramified in the Galois extensi…

math.NT2023

On the existence of Minkowski units

David Burns, Donghyeok Lim, Christian Maire

We investigate the Galois structure of algebraic units in cyclic extensions of number fields and thereby obtain strong new results on the existence of independent Minkowski -uni…

math.NT2023

On the analyticity of the maximal extension of a number field with prescribed ramification and splitting

Donghyeok Lim, Christian Maire

We determine all the -adic analytic groups that are realizable as Galois groups of the maximal pro- extensions of number fields with prescribed ramification and splitting und…