#12509: computation of height of point on elliptic curve over Q(sqrt(5)) is
WRONG
-----------------------------+----------------------------------------------
Reporter: was | Owner: was
Type: defect | Status: new
Priority: critical | Milestone: sage-5.0
Component: number theory | Keywords:
Work_issues: | Upstream: N/A
Reviewer: | Author:
Merged: | Dependencies:
-----------------------------+----------------------------------------------
Comment(by cremona):
This is also pretty damning:
{{{
sage: (3*P).height()/P.height()
9.19316602595430
sage: (2*P).height()/P.height()
4.09522243754782
}}}
My guess is that the local contributions from the finite primes are fine
(each is rational times log(p)), it's just the (two) real places. One
could compare with the real local heights as computed by Magma to verify
this.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12509#comment:3>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/sage-trac?hl=en.
