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Free product of Demushkin groups as absolute Galois group

Number Theory 2024-08-27 v1 Group Theory

Abstract

We prove that a free profinite (pro-pp) product over a set converging to 1 of countably many Demushkin groups of rank 0\aleph_0, GiG_i, that can be realized as absolute Galois groups, is isomorphic to an absolute Galois group if and only if logpq(Gi)\log_pq(G_i)\to \infty.

Cite

@article{arxiv.2408.13875,
  title  = {Free product of Demushkin groups as absolute Galois group},
  author = {Tamar Bar-On},
  journal= {arXiv preprint arXiv:2408.13875},
  year   = {2024}
}