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

Λεπτομέρειες βιβλιογραφικής εγγραφής
Κύριος συγγραφέας: Castillo, Maritina T.
Μορφή: Thesis
Γλώσσα:English
Έκδοση: 1999.
Θέματα:
Spectral theory (Mathematics).
Differential operators.