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 | 1 | initial version |
There is a problem since the a you are using seems to come from a previous computation.
At least on the last version of Sage, if you type
sage: K = GF(2^7,'a');
The python variable a does not point to the generator of K whose name is 'a'
sage: a
NameError: name 'a' is not defined
For this, you have to do:
sage: K.inject_variables()
Defining a
Then, everything seems to work:
sage: PK.<x>=K[];
sage: f = (a^6 + a^3 + a)*x^2 + (a^6 + a^4 + a^3)*x + (a^5 + a^4 + a^3 + a^2 + 1);
sage: print f.roots();
[(a^3 + a, 1), (a^5 + a^3 + a^2 + a, 1)]
| | 2 | No.2 Revision |
There is a problem since the variable a you are using in your third line seems to come from a previous computation.
At least on the last version of Sage, if you type
sage: K = GF(2^7,'a');
The python variable a does not point to the generator of K whose name is 'a'
sage: a
NameError: name 'a' is not defined
For this, you have to do:
sage: K.inject_variables()
Defining a
Then, everything seems to work:
sage: PK.<x>=K[];
sage: f = (a^6 + a^3 + a)*x^2 + (a^6 + a^4 + a^3)*x + (a^5 + a^4 + a^3 + a^2 + 1);
sage: print f.roots();
[(a^3 + a, 1), (a^5 + a^3 + a^2 + a, 1)]
