[Intersection de sous-groupes paraboliques dans les groupes de tresses euclidiens : une démonstration courte]
We give a short proof for the fact, already proven by Thomas Haettel, that the arbitrary intersection of parabolic subgroups in Euclidean Braid groups is again a parabolic subgroup. To that end, we use that the spherical-type Artin group is isomorphic to .
Nous donnons une démonstration courte du fait, déjà démontré par Thomas Haettel, que l’intersection arbitraire de sous-groupes paraboliques dans les groupes de tresses euclidiens est à nouveau un sous-groupe parabolique. À cette fin, nous utilisons le fait que le groupe d’Artin de type sphérique est isomorphe à .
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Accepté le :
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DOI : 10.5802/crmath.656
Keywords: Group theory, Artin groups, Euclidean braid groups, parabolic subgroups, group isomorphism
Mots-clés : Théorie des groupes, groupes d’Artin, groupes de tresses euclidiens, sous-groupes paraboliques, isomorphisme de groupes
Cumplido, María  1 ; Gavazzi, Federica  2 ; Paris, Luis  2
CC-BY 4.0
@article{CRMATH_2024__362_G11_1445_0,
author = {Cumplido, Mar{\'\i}a and Gavazzi, Federica and Paris, Luis},
title = {Intersection of parabolic subgroups in {Euclidean} braid groups: a short proof},
journal = {Comptes Rendus. Math\'ematique},
pages = {1445--1448},
year = {2024},
publisher = {Acad\'emie des sciences, Paris},
volume = {362},
number = {G11},
doi = {10.5802/crmath.656},
zbl = {07945486},
language = {en},
url = {https://www.numdam.org/articles/10.5802/crmath.656/}
}
TY - JOUR AU - Cumplido, María AU - Gavazzi, Federica AU - Paris, Luis TI - Intersection of parabolic subgroups in Euclidean braid groups: a short proof JO - Comptes Rendus. Mathématique PY - 2024 SP - 1445 EP - 1448 VL - 362 IS - G11 PB - Académie des sciences, Paris UR - https://www.numdam.org/articles/10.5802/crmath.656/ DO - 10.5802/crmath.656 LA - en ID - CRMATH_2024__362_G11_1445_0 ER -
%0 Journal Article %A Cumplido, María %A Gavazzi, Federica %A Paris, Luis %T Intersection of parabolic subgroups in Euclidean braid groups: a short proof %J Comptes Rendus. Mathématique %D 2024 %P 1445-1448 %V 362 %N G11 %I Académie des sciences, Paris %U https://www.numdam.org/articles/10.5802/crmath.656/ %R 10.5802/crmath.656 %G en %F CRMATH_2024__362_G11_1445_0
Cumplido, María; Gavazzi, Federica; Paris, Luis. Intersection of parabolic subgroups in Euclidean braid groups: a short proof. Comptes Rendus. Mathématique, Tome 362 (2024) no. G11, pp. 1445-1448. doi: 10.5802/crmath.656
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