On the existence of the essential spectrum for a class of differential expressions having normal maximal extensions

On the existence of the essential spectrum for a class of differential expressions having normal maximal extensions

Bibliographische Detailangaben
1. Verfasser: Castillo, Maritina T.
Format: Abschlussarbeit
Sprache:English
Veröffentlicht: 1999.
Schlagworte:
Spectral theory (Mathematics).
Differential operators.