Generalização da sequência curta de Fadell-Neuwirth para os grupos de tranças de superfícies
Dutra, Éderson Ricardo Frühling
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The objective of this work is to study the braid groups on topological surfaces as well as studying a generalization of the Fadell-Neuwirth short exact sequence. We treated also the existence of a cross-section for the Fadell-Neuwirth s generalized fibration, in particular, we are concerned in the case when the surface is equal the sphere S2.