I made this graph (meaning a fano's plane) but I have the zero outside
the graph ?
I don't understand why ? someone could explain ?
My adjacency_matrix is 8 but shouldn't be 7 ?
g=Graph(7)
edges = [(1,2), (1,3), (1,4),
(2,3), (2,4), (2,5), (2, 6),
(3,4), (3,5), (3,6), (3,7),
(4,6), (4,7), (5,6), (6,7)]
g.add_edge(1,2),g.add_edge(1,3),g.add_edge(1,4),g.add_edge(2,3),
g.add_edge(2,4),g.add_edge(2,5),g.add_edge(2,6),g.add_edge(3,4),
g.add_edge(3,5),g.add_edge(3,6),g.add_edge(3,7),g.add_edge(4,6),
g.add_edge(4,7),g.add_edge(5,6),g.add_edge(6,7)
g.show()
g.adjacency_matrix(),g.incidence_matrix()
Best
Henri
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