We present a simple algorithm that reduces the time complexity of solving the linear system $Gx=b$, where $G$ is a centrosymmetric/skew-centrosymmetric matrix. We also reduce the time complexity of solving some complex linear systems. We propose efficient methods for multiplying centrosymmetric/skew-centrosymmetric matrices.
"Algorithms for Centrosymmetric and Skew-Centrosymmetric Matrics." Missouri J. Math. Sci. 18 (1) 46 - 53, February 2006. https://doi.org/10.35834/2006/1801046