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.

H. P. Dikshit, Summability of a Sequence of Fourier Coefficients by a Triangular Matrix Transformation, Proceedings of the American Mathematical Society, Vol. 21, No. 1 (Apr., 1969), pp. 10-20 ...

Matrix inversion is very inefficient for computing direct solutions of the large sparse systems of linear equations that arise in many network problems. Optimally ordered triangular factorization of ...