Michael Somos on Fri, 15 Oct 1999 20:19:46 -0400 (EDT)

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ellisoncurve() bug?

                    GP/PARI CALCULATOR Version 2.0.17 (beta)
                i686 running linux (ix86 kernel) 32-bit version
              (readline v2.2 enabled, extended help not available)

                           Copyright (C) 1989-1999 by
          C. Batut, K. Belabas, D. Bernardi, H. Cohen and M. Olivier.

Type ? for help, \q to quit.
Type ?12 for how to get moral (and possibly technical) support.

   realprecision = 28 significant digits
   seriesprecision = 16 significant terms
   format = g0.28

parisize = 4000000, primelimit = 500000
gp> E=ellinit([0,0,1,-1,0]);
gp> ellisoncurve(E,ellztopoint(E,.1))
%2 = 0

Looks like a bug to me, but I could be wrong. Shalom, Michael