Problem-solving techniques in infinite graphs

The study of infinite graphs consists in a singular area from graph theory. In general, its problems cannot be approached by counting principles or optimizing algorithms, typical tools from finite combinatorics. In fact, a sort of arguments that support proofs in infinite graph theory are inherited...

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Detalhes bibliográficos
Autor: Real, Lucas Silva Sinzato
Formato: tesis de maestría
Estado:Versión publicada
Fecha de publicación:2024
País:Brasil
Recursos:Universidade de São Paulo (USP)
Repositorio:Biblioteca Digital de Teses e Dissertações da USP
Idioma:inglés
OAI Identifier:oai:teses.usp.br:tde-14052024-161415
Acesso em linha:https://www.teses.usp.br/teses/disponiveis/55/55135/tde-14052024-161415/
Access Level:acceso abierto
Palavra-chave:Edge-ends
End spaces
Espaços de extremidades
Extremidades via arestas
Grafos infinitos
Infinite graphs
Partições não amigáveis
Unfriendly partition
Descrição
Resumo:The study of infinite graphs consists in a singular area from graph theory. In general, its problems cannot be approached by counting principles or optimizing algorithms, typical tools from finite combinatorics. In fact, a sort of arguments that support proofs in infinite graph theory are inherited from other branches of mathematics, mainly those in which the notion of infinite itself is a matter of study. Regarding that, this work lies in the intersection between graph theory, set theory and topology, where some problems from first area will be analysed under a viewpoint of the others. With some special depth, we will study the unfriendly partition conjecture and its state of art, as well as the notion of ends in infinite graphs and their applications. Incidentally, besides revisiting the literature concerning these discussions, this dissertation contributes original results.