Matrices

Row matrix

A matrix having only one row

Column matrix

A matrix having only one column

Zero/Null matrix

Matrix whose all elements are zero

Square matrix

A matrix whose number of rows and columns are equal

Diagonal matrix

A square matrix whose non-diagonal elements are always zero

Scalar matrix

A Diagonal matrix in which all the diagonals are equal and non-diagonal elements are zero

Identity/Unit matrix

A scalar matrix where all diagonal elements are 1 and non-diagonal elements are zero

Triangular matrix

A square matrix where all elements towards either side (upper or lower) are zero