Types of matrices

Row matrix
Column matrix
Diagonal matrix
Scalar matrix
Identity or unit matrix
Upper triangular matrix
Lower triangular matrix





5. A matrix is termed as row matrix if m = 1
6. A matrix is termed as column matrix if n = 1
7. A matrix is termed as null or zero matrix if a_ij = 0 for all i and j.
8. A matrix is termed as diagonal matrix if a_ij = 0 for all ij where i is not equal to j.
9. A matrix is termed as scalar matrix if a_ij = 0 for all ij where i is not equal to j and a_ij = constant (k) for all i and j.
10. A matrix is termed as identity matrix or unit matrix if a_ij = 0 for all ij where i is not equal to j and a_ij = 1 for all i and j.