Order of Matrix

The number of rows and columns in the matrix is represented by the order in which the matrix is displayed. A matrix is an array of elements that are arranged in rows and columns, and the order of the elements in a matrix is important in determining the number of rows and columns in a matrix. The order of a matrix also aids in determining the type of matrix and the total number of elements in a matrix, which are both useful information.

The order of a matrix is an important factor in determining whether or not a particular arithmetic operation can be performed across two matrices in a given situation. The different types of matrices, as well as the various arithmetic operations that can be performed across matrices, can be learned about in this section, which is organised according to the order of the matrix.

As well as informing the number of rows and columns that are present in a matrix, the order of the matrix provides information about its overall size. Generally speaking, the order of a matrix is represented by the notation Am×n, where m denotes the number of rows in the matrix and n denotes the number of columns in the matrix. In addition, the answer to the multiplication of the order of the matrix (m×n) provides the number of elements in the matrix.

Types of matrices based on the order of matrix:

The order of a matrix determines the dimensions of the matrix, as well as the different types of matrices that can be created. Check out the occurrences of some of the different types of matrices in the following order.

• Order of a row matrix: A row matrix is a matrix with one row and many columns. This results in a row matrix with an order of the form 1×n.
• Order of a column matrix: A Column Matrix is a matrix with one column and many rows. As a result, the order of the column matrix is n×1.
• Order of a square matrix: A square matrix, as the name implies, has the same number of rows and columns as there are rows. A square matrix has an order of n×n as a result of which it has the form n×n. In the matrix in which, we have the same number of rows and columns as there are rows and columns.
• Order of a rectangular matrix: Consequently, the order of a rectangular matrix is in the form m×n, which indicates that the rows and columns of the rectangular matrix are unequal in number. 
• Order of a transpose matrix: Changing the rows into columns and the columns into rows of a matrix results in the transpose of the matrix being obtained. If we start with a matrix of order m and then transpose it to order n, the order of transpose is n×m. 

Order of a matrix for different matrix operations: 

The types of the matrix are represented by the order of the matrix. Furthermore, the order of the referred matrix is taken into consideration when performing arithmetic operations on matrices.

1. Addition and subtraction of matrices: When performing the addition or subtraction of two matrices, it is important that the order of the matrices be the same. Each matrix should have an equal number of rows and columns, with the number of rows in both matrices equal to the number of columns in both matrices.

1. Multiplication of matrices: The multiplication of matrices is complicated by the fact that the order of the matrices must be preserved. For multiplication to work, the number of columns in the first matrix for multiplication must equal the number of rows in the second matrix. The resultant matrix has an order that is equal to the sum of the number of rows in the first matrix and the number of columns in the second matrix, among other things.

Conclusion:

Order and dimension are terms that refer to the number of rows and columns that a matrix has in its design. According to the convention, rows are listed first, followed by columns. The order of a matrix is an important factor in determining whether or not a particular arithmetic operation can be performed across two matrices in a given situation. The order of a matrix is represented by the notation Am×n, where m denotes the number of rows in the matrix and n denotes the number of columns in the matrix.

A square matrix, as the name implies, has the same number of rows and columns as there are rows. A square matrix has an order of n×n.

The order of a rectangular matrix is in the form m×n, which indicates that the rows and columns of the rectangular matrix are unequal in number. 

Changing the rows into columns and the columns into rows of a matrix results in the transpose of the matrix being obtained.