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Master's Dissertation
DOI
https://doi.org/10.11606/D.55.2023.tde-04012024-144529
Document
Author
Full name
Leonardo Domingues do Amaral
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 2023
Supervisor
Committee
Aurichi, Leandro Fiorini (President)
Brech, Christina
Fonseca, Tiago Jardim da
Grulha Junior, Nivaldo de Góes
Title in Portuguese
Algumas aplicações de teoria dos conjuntos em outras áreas
Keywords in Portuguese
CW complexos
Grupo fundamental
Problema de Whitehead
Teoria dos conjuntos
Topologia
Abstract in Portuguese
Neste trabalho buscamos explorar aplicações de métodos e conceitos de teoria dos conjuntos, combinatória infinita e topologia geral no estudo de objetos normalmente atribuídos a outras áreas da matemática, primariamente álgebra. O texto consiste no estudo de três resultados principais, baseados em quatro artigos: o estabelecimento de condições necessárias e suficientes para que o produto de dois CW complexos seja um CW complexo, condições para que espaços métricos não tenham seu grupo fundamental isomorfo ao grupo aditivo dos racionais e uma demonstração da indecidibilidade do Problema de Whitehead.
Title in English
A few applications of set theory in other fields
Keywords in English
CW complexes
Fundamental group
Set theory
Topology
Whiteheads Problem
Abstract in English
In this work we aim to explore applications of methods and concepts from set theory, infinitary combinatorics, and set topology in the study of objects usually associated to other fields of mathematics, primarily algebra. The body text consists of the study of three main results, based on four articles: the establishment of necessary and sufficient conditions for the product space of two CW complexes to be a CW complex, conditions for the fundamental group of a metric space to not be isomorphic to the additive group of the rationals, and a demonstration of the undecidability of Whiteheads Problem in ZFC.
 
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Publishing Date
2024-01-04
 
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