An algorithm for determining the triangular decomposition H = R * DR of a Hankel matrix H using O (n 2) operations is derived. The derivation is based on the Lanczos algorithm and the relation between ...

Feng Qi, Qing Zou, Bai-Ni Guo, THE INVERSE OF A TRIANGULAR MATRIX AND SEVERAL IDENTITIES OF THE CATALAN NUMBERS, Applicable Analysis and Discrete Mathematics, Vol. 13, No. 2 (October 2019), pp.