Creates an $n\times n$ identity matrix.

Parameters:¶

size: int¶

The size $n$ along one dimension of the identity matrix.

dtype: DTypeLike | None = None¶

The numpy.dtype of the array elements. The default is None which represents the smallest unsigned data type for this FieldArray subclass (the first element in dtypes).

Returns:¶

A 2-D identity matrix with shape (size, size).

Examples¶

In [1]: GF = galois.GF(31)

In [2]: GF.Identity(4)
Out[2]: 
GF([[1, 0, 0, 0],
    [0, 1, 0, 0],
    [0, 0, 1, 0],
    [0, 0, 0, 1]], order=31)