sage: E=EllipticCurve('11a1');
sage: E.modular_degree();
/Applications/sage/local/bin/sympow: line 3: 9922 Segmentation
fault ./sympow $*
---------------------------------------------------------------------------
RuntimeError Traceback (most recent call
last)
/Hercules/MacUsers/graduate/sekhon/<ipython console> in <module>()
/Applications/sage/local/lib/python2.6/site-packages/sage/schemes/
elliptic_curves/ell_rational_field.pyc in modular_degree(self,
algorithm)
3194 if algorithm == 'sympow':
3195 from sage.lfunctions.all import sympow
-> 3196 m = sympow.modular_degree(self)
3197 elif algorithm == 'magma':
3198 from sage.interfaces.all import magma
/Applications/sage/local/lib/python2.6/site-packages/sage/lfunctions/
sympow.pyc in modular_degree(self, E)
227 if i == -1:
228 print self._fix_err(v)
--> 229 raise RuntimeError, "failed to compute modular
degree"
230 return sage.rings.all.Integer(v[i+len(s):])
231
RuntimeError: failed to compute modular degree
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