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Home  >  Volume 41

vHardy Space and Essential Spectrum of an Operator by M.N. Hounkounou, Kassim A.Mand Anjorin A.(pages 117-122
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We give the definitionofHardy space, the unilateral shift operator and the spectrum with the essential spectrum of an operator.

The real sequence are also defined. Furthermore we prove when a trace class operator on an Hilbert space is also trace class. We also consider the special function like Airy function and Bessel function and we consider their Tracy-Widom system and Airy function asymptotic formular.