Elif Otkun Cevik, Zameddin I. Ismailov
Abstract: Submitted November 30, 2011. Published November 27, 2012.
Math Subject Classifications: 47A10.
Key Words: Direct sum of Hilbert spaces; spectrum; resolvent set;
compact operators; discrete spectrum; eigenvalues.
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Elif Otkun Çevik Institute of Natural Sciences Karadeniz Technical University 61080, Trabzon, Turkey email: e_otkuncevik@hotmail.com |
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Zameddin I. Ismailov Department of Mathematics, Faculty of Sciences Karadeniz Technical University 61080, Trabzon, Turkey email: zameddin@yahoo.com |
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