up previous next
Characteristic

the characteristic of a ring

Syntax
Characteristic():INT
Characteristic(R:RING):INT

Description
This function returns the characteristic of the current ring, in the first case, or of the ring R, in the second.

Example
Use R ::= Z/(3)[t];
S ::= Q[x,y];
Characteristic(); -- characteristic of the current ring, R
3
-------------------------------
Characteristic(S);
0
-------------------------------