Geodesic
On the generalized Kato spectrum
Serdica Mathematical Journal, Tome 37 (2011) no. 4, pp. 283-294 Cet article a éte moissonné depuis la source Bulgarian Digital Mathematics Library

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We show that the symmetric difference between the generalized Kato spectrum and the essential spectrum defined in [7] by sec(T) = {l О C ; R(lI-T) is not closed } is at most countable and we also give some relationship between this spectrum and the SVEP theory.
Keywords: Semi-Regular Operators, Kato Type Operators, Generalized Kato Spectrum, Essential Spectrum 
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     author = {Benharrat, Mohammed and Messirdi, Bekkai},
     title = {On the generalized {Kato} spectrum},
     journal = {Serdica Mathematical Journal},
     pages = {283--294},
     year = {2011},
     volume = {37},
     number = {4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SMJ2_2011_37_4_a1/}
}
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Benharrat, Mohammed; Messirdi, Bekkai. On the generalized Kato spectrum. Serdica Mathematical Journal, Tome 37 (2011) no. 4, pp. 283-294. http://geodesic.mathdoc.fr/item/SMJ2_2011_37_4_a1/