PPT-Compressed Sparse Matrix Storage

Full storage 2dimensional array nrowsncols memory 31 0 53 0 59 0 41 26 0 31 41 59 26 53 1 3 2 3 1 Sparse storage Compressed storage by columns CSC Three 1dimensional

sparse spa time column spa sparse column time nnz triangular postorder matrix marked visit flops vector nonzero csc nonzeros solve factorization starting

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