Sparse matrices

square matrix with ones on the main diagonal and zeros elsewhere

matrix whose only nonzero elements are on its main diagonal

matrix whose entries are all 0

matrices representing permutation of vector elements; with exactly one 1 per row and column

matrix in which most of the elements are zero

matrix defined using smaller matrices called blocks

square matrix that has nonzero elements on the main diagonal, the first diagonal below this, and the first diagonal above the main diagonal only

matrix with non-zero elements only in a diagonal band

a square matrix where all the entries are zero except those on the diagonal going from the lower left corner to the upper right corner

matrix where a single element is one and the rest of the elements are zeroes

algorithm

elementary matrix representing a row-addition transformation

Matrix with exactly one nonzero entry in each row and each column