Document Type : Research Paper

Author

• Sinan Ercan

Department of Mathematics, Faculty of Sciences, Fırat University, Elazıvg, Turkey

Abstract

In this paper, we investigate the spectrum and fine spectrum of the upper triangular double-band matrix $\Delta ^{uv}$ on $cs$ sequence space. We also determine the approximate point spectrum, the defect spectrum and the compression spectrum of this matrix on $cs$.

Keywords

• Spectrum of an operator
• sequence space