Um homomorfismo índice associado à ações livres de grupos abelianos finitos

Detalhes bibliográficos
Ano de defesa: 2011
Autor(a) principal: Ura, Sérgio Tsuyoshi
Orientador(a): Pergher, Pedro Luiz Queiroz lattes
Banca de defesa: Não Informado pela instituição
Tipo de documento: Dissertação
Tipo de acesso: Acesso aberto
Idioma: por
Instituição de defesa: Universidade Federal de São Carlos
Programa de Pós-Graduação: Programa de Pós-Graduação em Matemática - PPGM
Departamento: Não Informado pela instituição
País: BR
Palavras-chave em Português:
Área do conhecimento CNPq:
Link de acesso: https://repositorio.ufscar.br/handle/20.500.14289/5871
Resumo: The main objective of this work is to generalize an article of Pedro Pergher, specifically the article A Zp - index homomorphism for Zp-spaces - Houston J. Math. - 31 - (2005) - N. 2 - 305-314 [7], replacing the cyclic group Zp by any finite abelian group. In his article, P. Pergher constructed an index-homomorphism associated to Zp-spaces, that is, topological spaces X equipped with free actions of the cyclic group Zp. This homomorphism has as domain the equivariant homology of X with Zp-coefficients, and Zp as target space. Our construction extends the construction of P. Pergher for arbitrary finite abelian groups G, in such a way that, similarly, our homomorphism has the equivariant homology of X with G-coefficients as domain, and G as target space. When restricted to G = Zp, our construction coincides with the Pergher index. It will be seen that our homomorphism allows achieving a Borsuk-Ulam result, concerning the existence of equivariant maps connecting two G-spaces subject to certain topological and homological conditions, when G has 2q elements with q odd. In the last chapter of the work, we detail a very recent result of Ikumitsu Nagasaki, Tomohiro Kawakami, Yasuhiro Hara and Fumihiro Ushitaki, which also proves our result of Borsuk-Ulam type above mentioned, using the Smith homology, and in such a way that all values of p are covered.