#4299: sha bound totally busted for rank 0 curves
---------------------------+------------------------------------------------
Reporter: was | Owner: was
Type: defect | Status: new
Priority: major | Milestone: sage-3.2
Component: number theory | Keywords:
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{{{
sage: E = EllipticCurve('11a1')
sage: Sha = E.sha()
sage: Sha.bound()
---------------------------------------------------------------------------
AttributeError Traceback (most recent call
last)
/home/wstein/sage/devel/sage-main/sage/schemes/elliptic_curves/<ipython
console> in <module>()
/home/wstein/sage/local/lib/python2.5/site-
packages/sage/schemes/elliptic_curves/sha.py in bound(self)
698 B of primes such that any divisor of Sha is in this list.
699 """
--> 700 if self.L1_vanishes():
701 B = self.bound_kolyvagin()
702 else:
AttributeError: 'Sha' object has no attribute 'L1_vanishes'
sage:
}}}
This is likely easy to fix and was caused by refactoring without enough
doctests.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/4299>
Sage <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of
Reinventing the Wheel
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