https://www.usna.edu/Users/math/wdj/_files/documents/teach/sm444/sm444_alg-graph-thry-notes.pdf
This example (figure 4, page11) is the fano plane, I thaught the the following example was how to make it but no....
sage: for x in GF(7): ....: L = [x+1,x+2,x+4] ....: L.sort() ....: print x, L B = matrix(ZZ,[[0,0,0,1,0,1,1],[1,0,0,0,1,0,1], [1,1,0,0,0,1,0],[0,1,1,0,0,0,1], [1,0,1,1,0,0,0],[0,1,0,1,1,0,0],[0,0,1,0,1,1,0]]) A = block_matrix(2, 2, [ B*0, B, B.transpose(), B*0 ]) sage: Gamma = Graph(A, format=’adjacency_matrix’) sage: Gamma.is_bipartite() -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at https://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.
