|Bill Allombert on Sat, 12 May 2012 14:14:11 +0200|
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|elliptic curves with prescribed periods|
Dear PARI users, Is there a convenient way to build an elliptic curve with prescribed period in ellinit Weierstrass form ? g2=elleisnum(om,4,1); g3=elleisnum(om,6,1); will give you the curve in the form y^2 = 4*x^3 - g2*x - g3 and then you will have to do a coordinate change before being able to use ellinit, which is not very convenient. Cheers, Bill.