2019-08-29 18:23:35 +0100 received badge ● Popular Question (source) 2019-08-29 18:23:35 +0100 received badge ● Notable Question (source) 2017-10-21 10:42:00 +0100 received badge ● Student (source) 2017-10-19 17:38:50 +0100 commented question Segmentation fault when multiplying by variable @eric_g Yikes, should I report it somewhere? 2017-10-19 00:05:15 +0100 asked a question Segmentation fault when multiplying by variable 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. = 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? 2017-10-19 00:05:15 +0100 asked a question Segmentation fault with product I'm trying to do symbolic calculation with polynomials on GF(3), multiplying unknown values in GF(3) by polinomials. The following code fails with a segmentation fault (Sage version is 7.5.1): P. = GF(3)['x'] var('a') sigma = 2*x^5 + x^3 + x^2 + 1 print(a*sigma)  What went wrong? How should I work with unknown values like 'a' in finite fields?