Cohomologia de Alexander-Spanier e o teorema de Ballesteros

In the present work, we prove a more general version of Jordan’s Curve Theorem. Supposing that f : X ---> Y is a proper map, where X and Y are topological manifolds of dimensions n and n + 1 , respectively, and more hypotheses about the set of f ’s self intersections, we get a formula for the num...

Descripción completa

Detalles Bibliográficos
Autor: Barbosa, Gabriel Santos
Tipo de recurso: tesis de maestría
Estado:Versión publicada
Fecha de publicación:2020
País:Brasil
Institución:Universidade Federal do Ceará (UFC)
Repositorio:Repositório Institucional da Universidade Federal do Ceará (UFC)
Idioma:portugués
OAI Identifier:oai:repositorio.ufc.br:riufc/62805
Acceso en línea:http://www.repositorio.ufc.br/handle/riufc/62805
Access Level:acceso abierto
Palabra clave:Teoria de cohomologia
Dualidade (Matemática)
Teorema de separação
Cohomology theory
Duality (Mathematics)
Separation theorem
Descripción
Sumario:In the present work, we prove a more general version of Jordan’s Curve Theorem. Supposing that f : X ---> Y is a proper map, where X and Y are topological manifolds of dimensions n and n + 1 , respectively, and more hypotheses about the set of f ’s self intersections, we get a formula for the number of connected components of the complement of f(X) in Y . For this, we will present an alternative cohomology theory and prove its main properties.