Gelfand numbers of diagonal matrices

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Ismailov Z. I., Cona L., Cevik E. O.

HACETTEPE JOURNAL OF MATHEMATICS AND STATISTICS, vol.44, no.1, pp.75-81, 2015 (SCI-Expanded) identifier identifier


In this work, a connection between Gelfand numbers of infinite diagonal matrix with linear bounded operator-elements in the direct sum of Banach spaces and its coordinate operators has been investigated.