• 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.55.2019.tde-02122019-154539
Document
Author
Full name
Victor Hugo Jorge Pérez
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 1999
Supervisor
Committee
Tari, Farid (President)
Levcovitz, Daniel
Ruas, Maria Aparecida Soares
Soares, Marcio Gomes
Vainsencher, Israel
Title in Portuguese
Sobre a Equisingularidade e Trivialidade Topológica de Germes em O (3, 3)
Keywords in Portuguese
Não disponível
Abstract in Portuguese
T. Gaffney mostrou que se alguns invariantes associados a urna família de germes de aplicações ft : Cn, 0 → Cp 0 são constantes ao longo do parâmetro t, então esta fainflia é Whitney equising-ular. O número de invariantes envolvidos neste resultado depende das dimensões (n,p) e este número é grande conforme n e p forem grandes. Então surge uma pergunta natural: Fixado um par (n,p), qual é o número mínimo de invariantes no Teorema de Gaffney para garantir a Whitney equisingularidade ou trivialidade topológica da familia? Esta pergunta foi respondida nos casos p = 1 e n ≠ 3; n = p = 2 e n = 2, p =3. Neste trabalho consideramos o caso n = p = 3. Estabelecemos relações entre as multiplicidades polares dos tipos estáveis e os invariantes zero estáveis permitindo, assim, reduzir o número de invariantes para equisingularidade de 18 a 6 no caso de corank 1. Apresentamos também fórmulas para o cálculo das multiplicidades polares para germes quase-homogéneos.
Title in English
Not available
Keywords in English
Not available
Abstract in English
T. Gaffney showed that if some invariants associated to germs in a family ft : C,sup>n,0 → Cp, 0 are constant along the parameter t, then the family is Whitney equisingular and therefore topologicaly trivial. The number of invariants involved depends on the dimensions (n, p), and this number is large when rt and p are large. It is then natural to ask: Fixing a pair (n, p), what is the minimum number of invariants in Gaffney's Theorem that are necesary to ensure Whitney equisigularity of the family? This question has been answered for the cases p = 1, n ≠ n = p = 2 and n=2, p= 3. In this thesis, we deal with the cases n = p =3. We first stablish relacionships between the polar multiplicities of the stable types and the zero-stable invariants, thus reducing the number of invaxiants from 18 to 6 for corank 1 germs. We also give formulae for polar multiplicities of quasi-homogeneons germs.
 
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.
Publishing Date
2019-12-02
 
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.