In Sage 5.8 on a mac. I have a functioning (and licensed) magma on my
computer, and apparently sage is trying to call it.
Victor
R.<x,y,z> = QQ[]
F = x^3 + 2*x*(y^2 + y*z + z^2) + y*z*(y + z)
F(0,0,1)
> 0
E = EllipticCurve_from_cubic(F,(0,0,1))
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "_sage_input_8.py", line 10, in <module>
exec compile(u'open("___code___.py","w").write("# -*- coding: utf-8 -*-\\n"
+
_support_.preparse_worksheet_cell(base64.b64decode("RSA9IEVsbGlwdGljQ3VydmVfZnJvbV9jdWJpYyhGLCgwLDAsMSkp"),globals())+"\\n");
execfile(os.path.abspath("___code___.py"))
File "", line 1, in <module>
File
"/private/var/folders/zs/sfhqf6rs4dgdjf89wmqsc6440000gn/T/tmpy6Qdo7/___code___.py",
line 3, in <module>
exec compile(u'E = EllipticCurve_from_cubic(F,(_sage_const_0 ,_sage_const_0
,_sage_const_1 ))
File "", line 1, in <module>
File
"/Applications/Sage-5.8-OSX-64bit-10.8.app/Contents/Resources/sage/local/lib/python2.7/site-packages/sage/schemes/elliptic_curves/constructor.py",
line 575, in EllipticCurve_from_cubic
s = magma.eval(cmd)
File
"/Applications/Sage-5.8-OSX-64bit-10.8.app/Contents/Resources/sage/local/lib/python2.7/site-packages/sage/interfaces/magma.py",
line 539, in eval
raise RuntimeError, "Error evaluating Magma code.\nIN:%s\nOUT:%s"%(x, ans)
RuntimeError: Error evaluating Magma code.
IN:aInvariants(MinimalModel(EllipticCurve(Curve(Scheme(P, x^3 + 2*x*y^2 +
2*x*y*z + y^2*z + 2*x*z^2 + y*z^2)),P!(0, 0, 1))));
OUT:
In file
"/Users/victorsmiller/.sage/temp/Victors_MacBook_Pro_2.local/7371/interface/tmp7444",
line 1, column 110:
>> x^3 + 2*x*y^2 + 2*x*y*z + y^2*z + 2*x*z^2 + y*z^2)),P!(0, 0, 1))));
^
Runtime error in elt< ... >: No permutation group context in which to create
cycle
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