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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.
Saad R. El-Shabrawy, Compactness Criteria and Spectra of Some Infinite Lower Triangular Matrices, Filomat, Vol. 36, No. 17 (2022), pp. 5913-5933 ...
Helper function MatInverseUpperTri () is used to compute the inverse of the R matrix that results from QR decomposition. The technique used to compute the inverse of an upper triangular or lower ...