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We shall use known geometric characterization of the essential spectrum [HS96, Theorem 10.6 p.102] to prove the invariance of σess(Hµ), when µ has compact support..
We consider Toeplitz operators with symbols enjoying a uniform radial limit on Segal–Bargmann type spaces.. We show that such an operator is compact if and only if the limiting
Rakotondratsimba, Weighted strong inequalities for maximal func- tions in Orlicz spaces.. Perez, Two weighted inequalities for potential and fractional type
Applying the frame characterization, we will then obtain some estimates of entropy numbers for the compact embeddings between Besov spaces or between Triebel–Lizorkin spaces and we
Key words and phrases: seminorms, Hahn-Banach theorem, Gel’fand pairs, Gel’fand measures, orthogonal projections and rank one operators in Hilbert spaces..
Another example [16, Example 7] shows that there exist operators for which Browder’s theorem holds, while the spectral mapping theorem for the Weyl spectrum fails.. The
A Radon{Nikodym type theorem for positive operators and a dual // Indag.. The representation of abstract measure functions
On the Multipliers of the Intersection of Weighted Function Spaces Serap Oztop 151 Approximation for Baskakov-Kantorovich-Bezier Operators in the Space Shunsheng Guo Qiulan Qi and
