On Wed, Mar 28, 2012 at 01:36:11AM -0700, Frédéric Chapoton wrote:
>I have found the following wrong behaviour on sage 4.8, without
>sage-combinat
>
>sage: P=DiGraph([[0,1]])
>sage: Q=P.cartesian_product(P)
>sage: len(Q.edges())
>0
>
>The result is a
Hello,
I have found the following wrong behaviour on sage 4.8, without
sage-combinat
sage: P=DiGraph([[0,1]])
sage: Q=P.cartesian_product(P)
sage: len(Q.edges())
0
The result is a disconnected union of 4 points.
This should be a directed square, with 4 edges.
Maybe this i
