#8238: heegner_index_bound may be incorrect for curves with rational torsion
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Reporter: rlm | Owner: cremona
Type: enhancement | Status: needs_work
Priority: major | Milestone: sage-4.4
Component: elliptic curves | Keywords:
Author: Robert Miller | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Changes (by rlm):
* type: defect => enhancement
Comment:
I was able to fix the output for rank 0 and 1 curves, but not in general.
Note it says
"This function returns the index divided by `2` exactly when the rank of
`E(K)` is greater than 1 and ..."
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/8238#comment:5>
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