- Tytuł:
- Hildebrandts theorem for the essential spectrum
- Autorzy:
-
Bracic, J.
Diogo, C. - Powiązania:
- https://bibliotekanauki.pl/articles/255837.pdf
- Data publikacji:
- 2015
- Wydawca:
- Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
- Tematy:
-
essential spectrum
Hildebrandt's theorem
essential numerical range - Opis:
- We prove a variant of Hildebrandt's theorem which asserts that the convex hull of the essential spectrum of an operator A on a complex Hilbert space is equal to the intersection of the essential numerical ranges of operators which are similar to A. As a consequence, it is given a necessary and sufficient condition for zero not being in the convex hull of the essential spectrum of A.
- Źródło:
-
Opuscula Mathematica; 2015, 35, 3; 279-285
1232-9274
2300-6919 - Pojawia się w:
- Opuscula Mathematica
- Dostawca treści:
- Biblioteka Nauki
Artykuł