A note on Nakano generalized difference sequence space

Abstract

Abstract In this paper, we investigate the necessary conditions on any s -type sequence space to form an operator ideal. As a result, we show that the s -type Nakano generalized difference sequence space X fails to generate an operator ideal. We investigate the sufficient conditions on X to be premodular Banach special space of sequences and the constructed prequasi-operator ideal becomes a small, simple, and closed Banach space and has eigenvalues identical with its s -numbers. Finally, we introduce necessary and sufficient conditions on X explaining some topological and geometrical structures of the multiplication operator defined on X .