| 1 | initial version |
sage: G = DiGraph(3, weighted=True)
sage: G.add_edges([(0,2,4), (1,2,6),(0,1,2)])
sage: G.laplacian_matrix()
[ 0 -2 -4]
[ 0 2 -6]
[ 0 0 10]
Copyright Sage, 2010. Some rights reserved under creative commons license. Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.