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Bill Allombert on Sat, 12 Oct 2024 22:36:46 +0200
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Re: possible request for new function to elliptic curves section
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- To: pari-users@pari.math.u-bordeaux.fr
- Subject: Re: possible request for new function to elliptic curves section
- From: Bill Allombert <Bill.Allombert@math.u-bordeaux.fr>
- Date: Sat, 12 Oct 2024 22:36:42 +0200
- Delivery-date: Sat, 12 Oct 2024 22:36:47 +0200
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On Sat, Oct 12, 2024 at 01:26:15PM -0700, American Citizen wrote:
> Would it be possible to have a new function added to GP Pari, such that
> supplying just the x-coordinate for an elliptic curve would return a 0 or a
> 1 depending upon whether or not x is a legitimate value?
Use ellordinate !
??ellordinate
ellordinate(E,x):
Gives a 0, 1 or 2-component vector containing the y-coordinates of the points of the curve E having x as x-coordinate.
Cheers,
Bill.