Geodesic
On Operators with Spectral Square but without Resolvent Points
Canadian journal of mathematics, Tome 57 (2005) no. 1, pp. 61-81

Voir la notice de l'article provenant de la source Cambridge University Press

Decompositions of spectral type are obtained for closed Hilbert space operators with empty resolvent set, but whose square has closure which is spectral. Krein space situations are also discussed.
DOI : 10.4153/CJM-2005-003-4
Mots-clés : 47A05, 47A15, 47B40, 47B50, 46C20, unbounded operators, closed operators, spectral resolution, indefinite metric 
Binding, Paul; Strauss, Vladimir. On Operators with Spectral Square but without Resolvent Points. Canadian journal of mathematics, Tome 57 (2005) no. 1, pp. 61-81. doi: 10.4153/CJM-2005-003-4
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