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division_points() fails for elliptic curve over number field #3383
Comments
comment:2
The code tries to compute in
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comment:3
Replying to @malb:
malb: I am fixing this as part of a rewrite for division-polynomial related stuff, which will not need to use such things at all, so I don't think you need to worry about this (at least for now). |
comment:4
This works for me:
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comment:5
It works for me too. I think that something deep down changed, so now it just works. It is still true that I am working on improving division poly stuff -- but on a clone which is on a machine currently broken, preventing me from finishing it off. In the meantime, let's just close this. |
comment:6
Hi John, Replying to @JohnCremona:
I agree, but let's add a doctest to catch this in case someone breaks it again. Cheers, Michael |
comment:7
Replying to @sagetrac-mabshoff:
Coming up... John
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comment:8
Attachment: sage-trac3383.patch.gz The patch just adds a doctest to show that the bug no longer exists. |
comment:9
Looks good to me and doctests fine. William also likes it. Cheers, Michael |
comment:10
Merged in Sage 3.1.alpha2 |
While testing/reviewing #3377 I found a problem with E.division_points() over a number field:
It looks quite deep in polynomial code but might turn out to be something simple.
Component: algebraic geometry
Issue created by migration from https://trac.sagemath.org/ticket/3383
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