Second order differentiability and related topics in the Takagi Class

In this paper we study some properties concerning the second order differentiability of the functions belonging to the Takagi class as well as the size of the sets where these properties hold. In particular, we characterize the set of points where these functions have a Taylor expansion of order two...

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Detalles Bibliográficos
Autores: Ferrera Cuesta, Juan, Gómez Gil, Javier, Llorente Jorge, Jesús
Tipo de recurso: artículo
Fecha de publicación:2022
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/133275
Acceso en línea:https://hdl.handle.net/20.500.14352/133275
Access Level:acceso abierto
Palabra clave:Takagi class
Second order differentiability
Taylor expansion of order two
Stepanov condition of order two
Convexity
Análisis matemático
1202.06 Convexidad, desigualdades
1202.10 Funciones de Variables Reales
1202.17 Medida, Integración, Area
Descripción
Sumario:In this paper we study some properties concerning the second order differentiability of the functions belonging to the Takagi class as well as the size of the sets where these properties hold. In particular, we characterize the set of points where these functions have a Taylor expansion of order two. Moreover, we also characterize when they satisfy a Stepanov condition of order two at a point. In this context, the convexity of such functions is also investigated. Finally, some interesting examples are provided.