Results 91 to 100 of about 4,674,369 (143)
On spectral continuity of the essential spectrum
, 2020 In this work, we discussed the spectrum continuity of some parts of the essential spectrum using a specific mode of convergence. more precisely, we investigate the relation between the essential approximate point spectrum of a sequence of bounded linear ...
DJABRI, Kenza
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, 1986 Literary journalhttps://nwcommons.nwciowa.edu/spectrum/1011/thumbnail ...
Spectrum Contributors,
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Perron-Frobenius and Krein-Rutman theorems for tangentially positive operators
Open Mathematics, 2012 Kanigowski Adam, Kryszewski Wojciech
doaj +1 more source
Interpolation of the essential spectrum and the essential norm [PDF]
Banach Center Publications, 2005 A. G. Aksoy, H.-O. Tylli
openaire +1 more source
Hilderbrand's theorem for the essential spectrum
Tyt. z nagłówka.Bibliogr. s. 284.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 ...
Bračič, Janko.
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Brief major depressive episode as an essential predictor of the Bipolar Spectrum Disorder
Journal of Research in Medical Sciences, 2009 <ul> <li><strong>BACKGROUND</strong>: A bipolar spectrum definition presented to help the designation of more appropriate diagnostic criteria for the Diagnostic and Statistical Manual of Mental Disorders, fifth edition (DSM-V) is ...
Amir Shabani +2 more
doaj
, 1989 Literary journalhttps://nwcommons.nwciowa.edu/spectrum/1013/thumbnail ...
Spectrum Contributors,
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, 1992 Literary journalhttps://nwcommons.nwciowa.edu/spectrum/1018/thumbnail ...
Spectrum Contributors,
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, 1990 Literary journalhttps://nwcommons.nwciowa.edu/spectrum/1014/thumbnail ...
Spectrum Contributors,
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Essential spectrum on Riemannian manifolds
By using a measure transformation method, the essential spectrum of the Laplacian in a noncompact Riemannian manifold is studied. The principle result given includes the corresponding main theorems in both Kumura [16] and Donnelly [9].
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