Modelo ideal de nefroprevención para Colombia

Autor: Juan Pablo Zakzuk Perez, Josber Vargas Torres, María Rosa Urzola Suárez, María Paula Piñerez Ochoa, German Arenas Hoyos, Oscar Ocampo Henao

Publikováno v: Revista Colombiana de Nefrología, Vol 8, Iss 3, Pp e431-e431 (2021)

La enfermedad renal crónica (ERC) es una patología altamente prevalente en países en vía de desarrollo como Colombia, en donde afecta a gran parte de la población. Esta es una enfermedad que afecta la calidad de vida y la longevidad de los pacie

Externí odkaz: https://doaj.org/article/c3ed30b638424c8d80dcc2b16c5d473f

Embeddings of finite groups in B n /Γ k (P n ) for k=2,3

Autor: Daciberg Lima Gonçalves, Oscar Ocampo, John Guaschi

Publikováno v: Annales de l'Institut Fourier. 70:2005-2025

Let $n \geq 3$. In this paper, we study the problem of whether a given finite group $G$ embeds in a quotient of the form $B_n/\Gamma_k(P_n)$, where $B_n$ is the $n$-string Artin braid group, $k \in \{2, 3\}$, and $\{\Gamma_l(P_n)\}_{l\in N}$ is the l

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1baffe5a982abc70e9b3c9ef2cbe1c17
https://doi.org/10.5802/aif.3380

Crystallographic groups and flat manifolds from surface braid groups

Autor: Daciberg Lima Gonçalves, John Guaschi, Oscar Ocampo, Carolina de Miranda e Pereiro

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Journal of Algebra
Journal of Algebra, Elsevier, 2021, 293, pp.107560. ⟨10.1016/j.topol.2020.107560⟩

Let M be a compact surface without boundary, and n ≥ 2 . We analyse the quotient group B n ( M ) / Γ 2 ( P n ( M ) ) of the surface braid group B n ( M ) by the commutator subgroup Γ 2 ( P n ( M ) ) of the pure braid group P n ( M ) . If M is dif

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::516bb0d8948c4a29757f0268e5a7ed62
http://arxiv.org/abs/2107.03683

The conjugacy problem and virtually cyclic subgroups in the Artin braid group quotient $B_n/[P_n,P_n]$

Autor: Oscar Ocampo, Paulo Cesar Cerqueira dos Santos Júnior

Let $n\geq 3$. In this paper we deal with the conjugacy problem in the Artin braid group quotient $B_n/[P_n,P_n]$. To solve it we use systems of equations over the integers arising from the action of $B_n/[P_n,P_n]$ over the abelianization of the pur

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a1e7854a85c87370ecd2e1e9b6c90daf

Almost-crystallographic groups as quotients of Artin braid groups

Autor: Oscar Ocampo, Daciberg Lima Gonçalves, John Guaschi

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Journal of Algebra
Journal of Algebra, Elsevier, 2019, 524, pp.160-186. ⟨10.1016/j.jalgebra.2019.01.010⟩

Let n , k ≥ 3 . In this paper, we analyse the quotient group B n / Γ k ( P n ) of the Artin braid group B n by the subgroup Γ k ( P n ) belonging to the lower central series of the Artin pure braid group P n . We prove that it is an almost-crysta

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::569ab5769f4d1b614e400275dbeffea0