3.2 (Prime fields). If p is a prime number, then Z=(p) is a field, denoted Fp . Indeed, (p) is a maximal ideal in Z. Thus, fields may be finite: Fp contains p elements.
3.2 (Prime fields). If p is a prime number, then Z=(p) is a fi eld, denotedFp. Indeed, (p) is a maximal ideal in Z. Thus, fields may be finite: Fpcontains pelements.