We specify the fine spectrum of the quadruple band matrix operator over the sequence spaces and , where . The quadruple band matrix is the general state of , , , , , , right shift and Zweier matrices, where , , , and are called third-order difference, triple band, second-order difference, double band (generalized difference) and difference matrix, respectively.
"On the fine spectrum of the operator over and , ." Rocky Mountain J. Math. 52 (3) 777 - 791, June 2022. https://doi.org/10.1216/rmj.2022.52.777