On the existence of the essential spectrum for a class of differential expressions
| Publicado en: | Matimya's Matematika Vol. 22, no. 2 (May. 1999), 28 - 32 |
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| Autor principal: | |
| Formato: | Artículo |
| Lenguaje: | English |
| Publicado: |
1999
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| Materias: |