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pro vyhledávání: '"Marin, Ivan"'
Autor:
Marin, Ivan
In this short note we provide an alternative proof of a theorem of Kapovich and Millson about the Malcev completion of an arbitrary Artin group, and determine the Malcev completion of the braid group of an irreducible finite complex reflection group.
Externí odkaz:
http://arxiv.org/abs/2303.02974
Autor:
Marin, Ivan
We construct new geometric realizations of simplicial and pre-simplicial sets where the standard $n$-simplex, viewed as the space of probability measures on $n+1$ elements, is replaced by the space of $(n+1)$-valued random variables, with the topolog
Externí odkaz:
http://arxiv.org/abs/2210.00559
Autor:
González-Meneses, Juan, Marin, Ivan
In this paper we introduce a class of `parabolic' subgroups for the generalized braid group associated to an arbitrary irreducible complex reflection group, which maps onto the collection of parabolic subgroups of the reflection group. Except for one
Externí odkaz:
http://arxiv.org/abs/2208.11938
Autor:
Callegaro, Filippo, Marin, Ivan
We investigate the rational cohomology of the quotient of (generalized) braid groups by the commutator subgroup of the pure braid groups. We provide a combinatorial description of it using isomorphism classes of certain families of graphs. We establi
Externí odkaz:
http://arxiv.org/abs/2111.05731
Neste trabalho e apresentado um estudo, via teoria de massa efetiva multibanda autoconsistente de heteroestruturas de semicondutores magnéticos diluídos, generalizada para incluir parâmetros de diferentes materiais. A interacao magnética e descri
Autor:
Hussain, Sardar Muhammad, Cuminato, José Alberto, Marin, Ivan Silvestre Paganini, Wendland, Edson Cezar
Publikováno v:
In Mathematics and Computers in Simulation April 2024 218:666-678
Autor:
Gobet, Thomas, Marin, Ivan
In the context of Hecke algebras of complex reflection groups, we prove that the generalized Hecke algebras of normalizers of parabolic subgroups are semidirect products, under suitable conditions on the parameters involved in their definition.
Externí odkaz:
http://arxiv.org/abs/2006.09028
Autor:
Marin, Ivan
In this technical note, we complete the PhD work of A. Esterle about determining the image of any Artin group of finite Coxeter type inside the associated Hecke algebra over a finite field, when the latter is semisimple. The only remaining case was t
Externí odkaz:
http://arxiv.org/abs/2003.00742
Let $W_0$ be a reflection subgroup of a finite complex reflection group $W$, and let $B_0$ and $B$ be their respective braid groups. In order to construct a Hecke algebra $\widetilde{H}_0$ for the normalizer $N_W(W_0)$, one first considers a natural
Externí odkaz:
http://arxiv.org/abs/2002.05468