class property galois.FieldArray.prime_subfield : Type[FieldArray]

The prime subfield \(\mathrm{GF}(p)\) of the extension field \(\mathrm{GF}(p^m)\).

Examples

In [1]: galois.GF(2).prime_subfield
Out[1]: galois.GF2

In [2]: galois.GF(2**8).prime_subfield
Out[2]: galois.GF2

In [3]: galois.GF(31).prime_subfield
Out[3]: galois.GF(31)

In [4]: galois.GF(7**5).prime_subfield
Out[4]: galois.GF(7)