Hi,
On Wed, 27 Apr 2011 15:25:18 -0700 (PDT)
tvn wrote:
> 1) Some expressions are evaluated to be the same
>
> sage: (-x +y == 0) in [x -y == 0]
> True
>
> sage: Set([-x +y > 0,x -y > 0])
> {-x + y > 0}
I don't know exactly what is going wrong here. Both expressions have
the same hash:
sa
greetings, I have been using Sage extensively in the past several months
and really like it. Hopefully I can make some contributions to it directly
someday.
Below lists two things about Expression in Sage that are not very intuitive
and should get addressed because it is very error-prone,
