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

Библиографические подробности
Главный автор: Castillo, Maritina T.
Формат: Диссертация
Язык:English
Опубликовано: 1999.
Предметы:
Spectral theory (Mathematics).
Differential operators.