Re: [sage-support] division by zero bug in EllipticCurve rank()

On Sun, Dec 27, 2015 at 12:05 PM, Andrey Novoseltsev wrote: > A report from Lee Morgenstern using SageMathCell running Sage 6.9.beta6, but > the same happens in 6.10: > > the following code produces > NTLError: RR: division by zero This curve has a very large conductor and coefficients, at least

[sage-support] Re: Sagecell not loading in webpage

On Wednesday, 23 December 2015 05:59:43 UTC-7, paad.ruslan...@gmail.com wrote: > > *Local files don't work with the public server...* > > *How do you fixed it for your server: https://sagecell.sagemath.org/ > ?* > I tried: > add_header Access-Control-Allow-Orig

[sage-support] division by zero bug in EllipticCurve rank()

A report from Lee Morgenstern using SageMathCell running Sage 6.9.beta6, but the same happens in 6.10: the following code produces NTLError: RR: division by zero m = 239; n = 48 X = 2*m*n; Y = m^2 - n^2; Z = m^2 + n^2 E = EllipticCurve([0, 2*(Z^2-X*Y), 0, (X*Y)^2, 0]) E.rank() The same error