#12917: is_cartesian_product
--------------------------------+-------------------------------------------
Reporter: ncohen | Owner: tbd
Type: enhancement | Status: needs_work
Priority: major | Milestone: sage-5.1
Component: graph theory | Resolution:
Keywords: | Work issues:
Report Upstream: N/A | Reviewers: David Coudert
Authors: | Merged in:
Dependencies: | Stopgaps:
--------------------------------+-------------------------------------------
Changes (by dcoudert):
* status: needs_review => needs_work
* reviewer: => David Coudert
Comment:
Hello,
I'm unable to install the patch with sage.5.1.beta1.
{{{
--- generic_graph.py
+++ generic_graph.py
@@ -13093,25 +13093,33 @@
def cartesian_product(self, other):
"""
Returns the Cartesian product of self and other.
-
+
The Cartesian product of `G` and `H` is the graph `L` with vertex
set
`V(L)` equal to the Cartesian product of the vertices `V(G)` and
`V(H)`,
and `((u,v), (w,x))` is an edge iff either - `(u, w)` is an edge
of
self and `v = x`, or - `(v, x)` is an edge of other and `u = w`.
-
- EXAMPLES::
-
+
+ .. SEEALSO::
+
+ -
:meth:`~sage.graphs.graph_decompositions.graph_products.is_cartesian_product`
+ -- factorization of graphs according to the cartesian
product
+
+ - :mod:`~sage.graphs.graph_decompositions.graph_products`
+ -- a module on graph products.
+
+ EXAMPLES::
+
sage: Z = graphs.CompleteGraph(2)
sage: C = graphs.CycleGraph(5)
sage: P = C.cartesian_product(Z); P
Graph on 10 vertices
sage: P.plot() # long time
-
- ::
-
+
+ ::
+
sage: D = graphs.DodecahedralGraph()
sage: P = graphs.PetersenGraph()
- sage: C = D.cartesian_product(P); C
+ sage: C = D.cartesian_product(P); C
Graph on 200 vertices
sage: C.plot() # long time
"""
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12917#comment:2>
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