Rational parametrization of affine curve [closed]

asked 2023-10-01 15:50:02 +0100

azerbajdzan gravatar image

Why is there error evaluating this?

B.<x,y> = AffineSpace(QQ,2)
p=Curve([3*x^2 + 2*y^2 - 5],B)
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Closed for the following reason question is not relevant or outdated by Max Alekseyev
close date 2023-10-03 17:38:13.401389



Works fine for me in sage 10.2.beta5. Are you using an old sage version ?

Scheme morphism:
  From: Affine Space of dimension 1 over Rational Field
  To:   Affine Plane Curve over Rational Field defined by 3*x^2 + 2*y^2 - 5
  Defn: Defined on coordinates by sending (t) to
        ((-2*t^2 + 5)/(2*t^2 + 4*t + 5), (2*t^2 + 10*t + 5)/(2*t^2 + 4*t + 5))
FrédéricC gravatar imageFrédéricC ( 2023-10-02 09:51:42 +0100 )edit

Yes I use SageMath 8.9 because I do not feel like to install Linux that is need for current version. By the way what is the last version that can be installed on Windows without the need of Linux... and is it still available for download?

azerbajdzan gravatar imageazerbajdzan ( 2023-10-03 12:19:26 +0100 )edit

Please check this guide for installing Sage in Windows: https://doc.sagemath.org/html/en/inst...

Max Alekseyev gravatar imageMax Alekseyev ( 2023-10-03 14:35:36 +0100 )edit

That is what I am talking about...First step - "Enable Windows Subsystem for Linux (WSL)" - in previous versions I did not need any Linux.

azerbajdzan gravatar imageazerbajdzan ( 2023-10-03 16:50:41 +0100 )edit

This is how it works now.

SageMath used to provide pre-built binaries for Windows based on Cygwin. This has been discontinued, and the old binaries that can be found are no longer supported. Use Windows Subsystem for Linux instead.

Max Alekseyev gravatar imageMax Alekseyev ( 2023-10-03 17:29:18 +0100 )edit