#12770: cartesian product of directed graphs
----------------------------+-----------------------------------------------
Reporter: chapoton | Owner: jason, ncohen, rlm
Type: defect | Status: new
Priority: major | Milestone: sage-5.0
Component: graph theory | Keywords: directed graph, product
Work issues: | Report Upstream: N/A
Reviewers: | Authors:
Merged in: | Dependencies:
Stopgaps: |
----------------------------+-----------------------------------------------
The Cartesian product of directed graphs does not work. For example
{{{
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 commutative square, with 4 edges.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12770>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/sage-trac?hl=en.
