Sobre os grupos de Gottlieb
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Data
2016-03-18
Autores
Pinto, Guilherme Vituri Fernandes [UNESP]
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Editor
Universidade Estadual Paulista (Unesp)
Resumo
O objetivo deste trabalho é estudar grande parte do artigo [6], no qual Gottlieb define o subgrupo G(X, x_0) de pi_1(X, x_0) (em que X é um CW-complexo conexo por caminhos), posteriormente chamado de grupo de Gottlieb; o calculamos para diversos espaços, como as esferas, o toro, os espaços projetivos, a garrafa de Klein, etc.; posteriormente, estudamos o artigo [22] de Varadarajan, que generalizou o grupo de Gottlieb para um subconjunto G(A, X) de [A, X]_∗ . Por fim, calculamos G(S^n, S^n).
The goal of this work is to study partially the article [6], in which Gottlieb has defined a subgroup G(X, x_0) of pi_1(X, x_0) (where X is a path-connected CW-complex based at x_0), called "Gottlieb group" in the literature. This group is computed in this work for some spaces, namely the spheres, the torus, the projective spaces, and the Klein bottle. Further, a paper by Varadarajan [22] who has generalized Gottlieb group to a subset G(A, X) of [A, X]_* is studied. Finally, the groups G(S^n, S^n) is computed.
The goal of this work is to study partially the article [6], in which Gottlieb has defined a subgroup G(X, x_0) of pi_1(X, x_0) (where X is a path-connected CW-complex based at x_0), called "Gottlieb group" in the literature. This group is computed in this work for some spaces, namely the spheres, the torus, the projective spaces, and the Klein bottle. Further, a paper by Varadarajan [22] who has generalized Gottlieb group to a subset G(A, X) of [A, X]_* is studied. Finally, the groups G(S^n, S^n) is computed.
Descrição
Palavras-chave
Grupo de Gottlieb, Grupo de homotopia, Invariante de Hopf, Produto de Whitehead, Gottlieb group, Homotopy group, Hopf invariant, Whitehead product