Spectra and fine spectra for the upper triangular band matrix U(a0, a1, a2; b0, b1, b2) over the sequence space c0

Author
Durna, Nuh

Kılıç, Rabia

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https://www.revistaproyecciones.cl/article/view/3416
Abstract
The aim of this paper is to obtain the spectrum, fine spectrum, approximate point spectrum, defect spectrum and compression spectrum of the operator on the sequence space c0 where b0, b1 , b2 are nonrzero and the nonzero diagonals are the entries of an oscillatory sequence.
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