Arithmetic is usually done over the full ring of integers; setting the option Modulus specifies that arithmetic should instead be done in the finite ring .
The setting Modulus->0 specifies the full ring of integers.
Some functions require that Modulus be set to a prime, or a power of a prime. is a finite field when is prime.
of integers; setting the option Modulus specifies that arithmetic should instead be done in the finite ring 
. 
of integers. 
is a finite field when 
is prime. 
EXAMPLES
Basic Examples 
Scope 