ListarAlgebra por materia "braid"
Mostrando ítems 1-4 de 4
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Artículo
New presentations of surface braid groups
(World Scientific Publishing, 2001)In this paper we give new presentations of the braid groups and the pure braid groups of a closed surface. We also give an algorithm to solve the word problem in these groups, using the given presentations.
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Artículo
On the structure of the centralizer of a braid
(Elsevier, 2004)The mixed braid groups are the subgroups of Artin braid groups whose elements preserve a given partition of the base ...
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Artículo
The nth root of a braid is unique up to conjugacy
(Mathematical Sciences Publishers, 2003-11-01)We prove a conjecture due to Makanin: if α and β are elements of the Artin braid group Bn such that α k = β k for some nonzero integer k, then α and β are conjugate. The proof involves the Nielsen-Thurston classification of braids.
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Artículo
Vassiliev invariants for braids on surfaces
(American Mathematical Society, 2004)We show that Vassiliev invariants separate braids on a closed oriented surface, and we exhibit an universal Vassiliev ...