... y)(2.7.21)Inversion by PartitioningOnce in a while, you will encounter a matrix (not even necessarily sparse)that can be inverted efficiently by partitioning. Suppose that the N × N matrixA is partitioned ... specially, because thatparticular type of linear system admits a solution in only of order N operations,rather than of order N3for the general linear problem. When such particular typesexist, ... Sparse Matrix Pack-age, Technical Reports 112 and 114 (Yale University Department of Computer Science). [6]Knuth, D.E. 19 68, Fundamental Algorithms, vol. 1 ofThe Art of Computer Programming(Reading,MA:...