Dear Christian Stump,
*Thank you.*
*Sincerely*
*Biswajit*
On Wednesday, 1 February 2017 19:46:07 UTC+5:30, Christian Stump wrote:
>
> Dear Biswajit,
>
> it doesn't hurt opening a question with a friendly sentence.
>
> Anyway, as the output tells you, your graph vertices are labelled by
> strings (namely "x0", "x1", ...) which you cannot multiply as the
> product of two strings is not defined here.
>
> If you want to use variables instead, you do for example
>
> sage: P.<x0,x1,x2,y1,y2> = PolynomialRing(QQ,5)
> sage: dia = DiGraph({x0:{x1:(1, -1),y1:(1, -1),x2:(1, -1)},y2:{x0:(1,
> -1),x1:(1, -1)}})
> sage: diaout = dia.neighbors_out(x0);diaout
> [y1, x2, x1]
> sage: prod(diaout)
> x1*x2*y1
>
> Cheers, Christian
>
--
You received this message because you are subscribed to the Google Groups
"sage-combinat-devel" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to sage-combinat-devel+unsubscr...@googlegroups.com.
To post to this group, send email to sage-combinat-devel@googlegroups.com.
Visit this group at https://groups.google.com/group/sage-combinat-devel.
For more options, visit https://groups.google.com/d/optout.
