Presenting the Zassenhaus Lie algebra by the Magnus Lie algebra

Fuente: arXiv
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Autori principali: Marmo, Ettore, Riley, David, Weigel, Thomas
Natura: Preprint
Pubblicazione: 2025
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author Marmo, Ettore
Riley, David
Weigel, Thomas
author_facet Marmo, Ettore
Riley, David
Weigel, Thomas
contents It is shown that the Zassenhaus restricted $\mathbb F_p$-Lie algebra of a (pro-p) group G can be presented by the Magnus Lie algebra of G. For the class of (pro-p) groups for which the terms of the lower central series are torsion-free, the Zassenhaus restricted $\mathbb F_p$-Lie algebra can be explicitly computed from the Magnus Lie algebra. These results apply to orientable surface groups, right-angled Artin groups, pure braid groups, fundamental groups of supersolvable hyperplane arrangements and fundamental groups of strictly supersolvable toric arrangements.
format Preprint
id arxiv_https___arxiv_org_abs_2511_13379
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Presenting the Zassenhaus Lie algebra by the Magnus Lie algebra
Marmo, Ettore
Riley, David
Weigel, Thomas
Group Theory
20F40 (Primary) 17B70, 20F14 (Secondary)
It is shown that the Zassenhaus restricted $\mathbb F_p$-Lie algebra of a (pro-p) group G can be presented by the Magnus Lie algebra of G. For the class of (pro-p) groups for which the terms of the lower central series are torsion-free, the Zassenhaus restricted $\mathbb F_p$-Lie algebra can be explicitly computed from the Magnus Lie algebra. These results apply to orientable surface groups, right-angled Artin groups, pure braid groups, fundamental groups of supersolvable hyperplane arrangements and fundamental groups of strictly supersolvable toric arrangements.
title Presenting the Zassenhaus Lie algebra by the Magnus Lie algebra
topic Group Theory
20F40 (Primary) 17B70, 20F14 (Secondary)
url https://arxiv.org/abs/2511.13379