Universal Taylor series with maximal cluster sets

We link the overconvergence properties of certain Taylor series in the unit disk to the maximality of their cluster sets, so connecting outer wild behavior to inner wild behavior. Specifically, it is proved the existence of a dense linear manifold of holomorphic functions in the disk that are, excep...

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Detalles Bibliográficos
Autores: Bernal González, Luis, Bonilla Ramírez, Antonio Lorenzo, Calderón Moreno, María del Carmen, Prado Bassas, José Antonio
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2009
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/33575
Acceso en línea:http://hdl.handle.net/11441/33575
https://doi.org/10.4171/RMI/582
Access Level:acceso abierto
Palabra clave:Maximal cluster set
universal Taylor series
dense linear submanifold
closed linear submanifold
differential operator
curve with non-total oscillation
Descripción
Sumario:We link the overconvergence properties of certain Taylor series in the unit disk to the maximality of their cluster sets, so connecting outer wild behavior to inner wild behavior. Specifically, it is proved the existence of a dense linear manifold of holomorphic functions in the disk that are, except for zero, universal Taylor series in the sense of Nestoridis and, simultaneously, have maximal cluster sets along many curves tending to the boundary. Moreover, it is constructed a dense linear manifold of universal Taylor series having, for each boundary point, limit zero along some path which is tangent to the corresponding radius. Finally, it is proved the existence of a closed infinite dimensional manifold of holomorphic functions enjoying the two-fold wild behavior specified at the beginning.