We give the fine spectrum of the quadruple band matrix operator over and . The matrix generalizes , , , , , , 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 quadruple band matrix operator over $c_0$ and $c$." Rocky Mountain J. Math. 50 (5) 1567 - 1581, October 2020. https://doi.org/10.1216/rmj.2020.50.1567