Sur les monoïdes des classes de groupes de tresses

Autor: Gonzalez Pagotto, Pablo

Publikováno v: Topologie algébrique [math.AT]. Université Grenoble Alpes, 2019. Français. ⟨NNT : 2019GREAM049⟩

Hurwitz showed that a branched cover f:M→N of surfaces with branch locus P⊂N determines and is determined, up to inner automorphism of the symmetric group S_m, by a homomorphism π_1(NP, ∗) → S_m . This result reduces the questions of existen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______2592::8b76107f3812f94d869e0d8581d40dae
https://tel.archives-ouvertes.fr/tel-02524192

A Product on Double Cosets of B ∞

Autor: Gonzalez Pagotto, Pablo

Publikováno v: Symmetry, Integrability and Geometry: Methods and Applications
Symmetry, Integrability and Geometry: Methods and Applications, 2018, 14
Symmetry, Integrability and Geometry : Methods and Applications
Symmetry, Integrability and Geometry : Methods and Applications, National Academy of Science of Ukraine, 2018, 14

International audience; For some infinite-dimensional groups G and suitable subgroups K there exists a monoid structure on the set K∖G/K of double cosets of G with respect to K. In this paper we show that the group B∞, of the braids with finitely

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::e9450c76612a0d64239cee03aba02b38
https://hal.archives-ouvertes.fr/hal-01990607