On Mon, May 19, 2008 at 6:29 PM, Dan Shumow <[EMAIL PROTECTED]> wrote:
>
> Presently, in sage, is there anyway to computer the torsion subgroup
> of a curve over an arbitrary number field?
>
> I'm pouring through the documentation, and I see how to do it for a
> curve over the rationals.  Is this not implemented for number fields?
>
> Thanks,
> Dan

No, I don't think there is.  I would love for somebody to implement this.

Ifti -- any thoughts -- your thesis was on this sort of thing?

John Cremona -- any thoughts -- this seems right up your ally.

It's funny that we have conductors, tate's algorithm, etc over number
fields but not torsion.

William

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