In Sage 7.5.1 I'm trying to work with unknown values in GF(3) and polynomials.
The following code gives me a segmentation fault:
P.<x> = GF(3)['x']
var('a')
sigma = 2*x+ 1
print(a*(sigma))
What is the proper way to handle unknown GF(3) values like "a" in Sage?