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

Bibliografische gegevens
Hoofdauteur: Castillo, Maritina T.
Formaat: Thesis
Taal:English
Gepubliceerd in: 1999.
Onderwerpen:
Spectral theory (Mathematics).
Differential operators.