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Master's Dissertation
DOI
https://doi.org/10.11606/D.45.2010.tde-12012011-204505
Document
Author
Full name
Paulo Augusto Ribeiro
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2010
Supervisor
Committee
Borsari, Lucilia Daruiz (President)
Cardona, Fernanda Soares Pinto
Manzoli Neto, Oziride
Title in Portuguese
Campos de caminhos em variedades topológicas
Keywords in Portuguese
campos de caminhos
característica de Euler
variedades topológicas
Abstract in Portuguese
Esta dissertação expõe o estudo realizado sobre o artigo de R. Brown, citado na bibliografia, e sobre os conceitos necessários para a compreensão deste material. Entre os principais conceitos e resultados preliminares discutidos, podemos citar: topologia de espaços de funções, teoria de homotopia, espaços compactos ANR, característica de Euler de um compacto ANR, teorema de Lefschetz, espaços fibrados, e campos de caminhos. Os principais resultados discutidos na dissertação são os teoremas centrais do artigo de Brown: toda n-variedade topológica compacta admite um campo de caminhos com no máximo uma singularidade; e, uma n-variedade topológica compacta orientável admite um campo de caminhos sem singularidades se, e somente se, sua característica de Euler é zero. Discutimos também, suas respectivas consequências em teoria de ponto fixo
Title in English
Path fields on topological manifolds
Keywords in English
Euler characteristic
path fields
topological manifolds
Abstract in English
This essay has the purpose of exposing the studies on the paper by R. Brown, quoted on the references, and on the concepts necessary to the comprehension of it. Among the main concepts and preliminary results discussed, we can cite: topology of function spaces, homotopy theory, ANR compact spaces, Euler characteristic of a compact ANR, Lefschetz theorem, fiber spaces, and field paths. The main results discussed in the text are the central theorems presented on Brown's paper: every compact topological n-manifold admits a path field with at most one singularity, and a compact orientable topological n-manifold M admits a nonsingular path field if and only if the Euler characteristic of M is zero. We also discussed their consequences on fixed point theory
 
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Publishing Date
2011-05-12
 
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