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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Índice de Yang e teoremas generalizados

Costa, Willer Daniel da Silva 26 July 2011 (has links)
Made available in DSpace on 2016-06-02T20:28:26Z (GMT). No. of bitstreams: 1 3804.pdf: 547055 bytes, checksum: af56410714984fa20f396c4ab492dc3f (MD5) Previous issue date: 2011-07-26 / Universidade Federal de Sao Carlos / We work with T-spaces (X; T), where X is a Hausdor_ compact space and T : X ! X is a continuous involution without _xed points. Considering the sphere Sn with the antipodal map, we highlight three classical theorems relating to the T-space Sn;A): Borsuk-Ulam's theorem, Kakutani-Yamabe-Yujobô's theorem and Dyson's theorem. This dissertation consists of a detailed study of the article fo C. T. Yang (Annals of Math. 60, no. 2 (1954), 262-282) where the author introduces a concept of the index and presents, in a sense homological, generalizations of the three theorems cited above, considering any T-space. Beyond the generalizations itself, we build examples of the index calculation of some T-spaces and, still, we explore a concept of orthogonality in T-spaces. / Trabalhamos com T-espaços (X; T), em que X é um espaço compacto e Hausdor _ e T : X ! X é uma involução contínua sem pontos _xos. Considerando a esfera Sn com a aplicação antipodal, destacamos três teoremas clássicos relativos ao T-espaço (Sn;A): teorema de Borsuk-Ulam, teorema de Kakutani-Yamabe-Yujobô e teorema de Dyson. Esta dissertação consiste em um estudo detalhado do artigo de C. T. Yang (Annals of Math. 60, no. 2 (1954), 262-282) em que o autor introduz um conceito de índice e apresenta, em certo sentido homológico, generalizações dos três teoremas citados acima, considerando T-espaços quaisquer. Além das generalizações em si, construímos exemplos de cálculo de índice de alguns T-espaços e, ainda, exploramos um conceito de ortogonalidade em T-espaços.

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