Spectral theory and Green's functions related to nonlocal differential equations. Application to nonlinear problems

Differential equations represent an important tool for solving many real problems. In this thesis we focus on the qualitative properties of the solutions of functional equations with nonlocal boundary conditions, focusing on the study of constant sign solutions. We will study comparison results betw...

Descripción completa

Detalles Bibliográficos
Autor: Yousfi Khoumsi, Mouhcine
Tipo de recurso: tesis doctoral
Fecha de publicación:2024
País:España
Institución:Universidad de Santiago de Compostela (USC)
Repositorio:Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela
Idioma:inglés
OAI Identifier:oai:minerva.usc.gal:10347/34901
Acceso en línea:http://hdl.handle.net/10347/34901
Access Level:acceso abierto
Palabra clave:120208 Ecuaciones funcionales
120215 Ecuaciones integrales
120219 Ecuaciones diferenciales ordinarias
Descripción
Sumario:Differential equations represent an important tool for solving many real problems. In this thesis we focus on the qualitative properties of the solutions of functional equations with nonlocal boundary conditions, focusing on the study of constant sign solutions. We will study comparison results between the Green's functions related to the Hill's equation subject to different boundary conditions. The relationship between the respective spectra of the different problems considered will be also studied. Finally, we will addressed the study of nonlinear systems subject to nonlocal linear boundary conditions and the spectral charaterization of the constant sign derivatives of the Green's function.