Types of Matrices

Column Matrix

matrix with only one column.

Row Matrix

matrix with only one row.

Square Matrix

matrix having the same number of rows and columns 1.

Rectangular Matrix

matrix having unequal number of rows and columns.

Unit Matrix

a square matrix in which all elements in the main diagonal are equal to 1 while all other elements are zero.

Zero or Null Matrix

matrix with all of its elements are equal to zero.

Diagonal Matrix

a square matrix with all elements except the elements in the main diagonal are zero.

Identity Matrix

a diagonal matrix whose elements are equal to 1.

Symmetric Matrix

a square matrix with aij = aji for all i and j.

Upper Triangular Matrix

a square matrix with aij = 0 for all i > j.

Lower Triangular Matrix

a square matrix with aij = 0 for all i < j.