6. Consider the Wagner graph G, defined to have vertex set V(G) = {0,1,2,3,4,5,6,7) and where every vertex u eV() has ne
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6. Consider the Wagner graph G, defined to have vertex set V(G) = {0,1,2,3,4,5,6,7) and where every vertex u eV() has ne
6. Consider the Wagner graph G, defined to have vertex set V(G) = {0,1,2,3,4,5,6,7) and where every vertex u eV() has neighbourhood N(u) = {u-1 mod 8,u+1 mod 8, u +4 mod 8). Prove that G is non-planar by applying the Kuratowski-Wagner Theorem,
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