• JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
 
  Bookmark and Share
 
 
Doctoral Thesis
DOI
https://doi.org/10.11606/T.45.2017.tde-29032017-220502
Document
Author
Full name
Icaro Gonçalves
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2016
Supervisor
Committee
Brito, Fabiano Gustavo Braga (President)
Machado, Daniel Miranda
Ripoll, Jaime Bruck
Silva, Marcos Martins Alexandrino da
Toben, Dirk
Title in Portuguese
Aspectos topológicos na teoria geométrica de folheações
Keywords in Portuguese
Campos vetoriais unitários
Classe de Euler
Folheações umbílicas
Grau da aplicação normal de Gauss
Hipersuperfícies
Abstract in Portuguese
Neste trabalho calculamos a classe de Euler de uma folheação umbílica em um ambiente com forma de curvatura apropriada. Combinamos o teorema de Hopf-Milnor e o número de Euler de uma folheação, definido por Connes, para mostrar como a geometria da folheação influencia na topologia da variedade folheada, bem como na topologia da folheação. Além disso, exibimos uma lista de invariantes topológicos para campos vetoriais unitários em hipersuperfícies fechadas do espaço Euclidiano, e mostramos como estes invariantes podem ser empregados como obstruções a certas folheações com geometria prescrita.
Title in English
Topological aspects in the geometric theory of foliations
Keywords in English
Degree of the Gauss map
Euler class
Hypersurfaces
Umbilic foliations
Unit vector fields
Abstract in English
In this work we compute the Euler class of an umbilic foliation on a manifold with suitable curvature form. We combine the Hopf-Milnor theorem and the Euler number of a foliation, defined by Connes, in order to show how the geometry of the foliation influences the topology of the foliated space as well as the topology of the foliation. Besides, we exhibit a list of topological invariants for unit vector fields on closed Euclidean hypersurfaces, and show how these invariants may be employed as obstructions to certain foliations with prescribed geometry.
 
WARNING - Viewing this document is conditioned on your acceptance of the following terms of use:
This document is only for private use for research and teaching activities. Reproduction for commercial use is forbidden. This rights cover the whole data about this document as well as its contents. Any uses or copies of this document in whole or in part must include the author's name.
versaofinal.pdf (826.69 Kbytes)
Publishing Date
2017-04-03
 
WARNING: Learn what derived works are clicking here.
All rights of the thesis/dissertation are from the authors
CeTI-SC/STI
Digital Library of Theses and Dissertations of USP. Copyright © 2001-2024. All rights reserved.