Hi Florent,
On Thu, 17 Nov 2011 14:44:35 +0100
Florent Hivert wrote:
> On Wed, Nov 16, 2011 at 03:48:10PM +0100, Burcin Erocal wrote:
> > On Wed, 16 Nov 2011 15:10:54 +0100
> > Florent Hivert wrote:
> >
> > > > Pynac supports indexed expressions already. It just isn't
> > > > wrapped in Sage y
Hi Burcin,
On Wed, Nov 16, 2011 at 03:48:10PM +0100, Burcin Erocal wrote:
> On Wed, 16 Nov 2011 15:10:54 +0100
> Florent Hivert wrote:
>
> > > Pynac supports indexed expressions already. It just isn't wrapped in
> > > Sage yet. Again, there is an experimental patch available:
> > >
> > >
On Wed, 16 Nov 2011 15:10:54 +0100
Florent Hivert wrote:
> > Pynac supports indexed expressions already. It just isn't wrapped in
> > Sage yet. Again, there is an experimental patch available:
> >
> > http://sage.math.washington.edu/home/burcin/indexed_expression-20110727.patch
> >
> > Since yo
> Pynac supports indexed expressions already. It just isn't wrapped in
> Sage yet. Again, there is an experimental patch available:
>
> http://sage.math.washington.edu/home/burcin/indexed_expression-20110727.patch
>
> Since you can wrap any hashable Python object in a symbolic expression
> with S
Hi,
I discovered that units have the same flaw. This all look good:
sage: units.length.meter^2
meter^2
sage: u = units.length.meter^2
sage: u.op[0]
meter
sage: type(units.length.meter)
However, getting back meter from u give not a unit but a plain Expression:
sage: type(u.op[0])
sage: u
Hi Florent,
On Tue, 15 Nov 2011 17:29:38 +0100
Florent Hivert wrote:
> So I'm trying to inherits from Expression. Here is my code:
>
> from sage.symbolic.expression import Expression
> class IndexedVarExpr(Expression):
> def index(self):
> return self._index
>
> class IndexedVar(S
Hi there,
I'm trying to make sage aware of indexed variables. For the information, this
is a long standing Sage-Combinat wish. more precisely, basically I need a sage
object Y such that, for any object (say hashable) o:
1 - the call Y[o] returns a variable which is legal in symbolic express
