On the existence of the essential spectrum for a class of differential expressions

Détails bibliographiques
Publié dans:	Matimya's Matematika Vol. 22, no. 2 (May. 1999), 28 - 32
Auteur principal:	Castillo, Maritina T.
Format:	Article
Langue:	English
Publié:	1999
Sujets:	Castillo, Maritina T. Differential operators Spectral theory (Mathematics)