WebNov 20, 2024 · A (simple, undirected) graph G is vertex transitive if for any two vertices of G there is an automorphism of G that maps one to the other. Similarly, G is edge … WebApr 21, 2024 · Let G be a graph that is both vertex-transitive (Then G is regular of degree k, say.) and edge-transitive , prove that G is bipartite and its simple eigenvalue is k and − k. Another question: if G only has simple eigenvalue , prove that G has at most two vertices.
Both vertex-transitive and edge-transitive graph is bipartite.
WebMar 22, 2007 · An edge-transitive graph is a graph such that any two edges are equivalent under some element of its automorphism group. More precisely, a graph is edge-transitive if for all pairs of edges there … WebMay 22, 2015 · A regular graph is not even edge transitive, as a rule, starting with disconnected 2-regular graphs. Even if you consider connected ones, in 3-regular graphs you can replace an edge with a - ( )- and get a new 3 regular graph. I think doing it repeatedly in random places would yield fairly non-symmetric things. hemmings motor magazine
The 2-token graph of the 7-vertex path. - ResearchGate
WebMar 22, 2007 · An edge-transitive graph is a graph such that any two edges are equivalent under some element of its automorphism group. More precisely, a graph is edge-transitive if for all pairs of edges there exists … WebMay 24, 2024 · Similarly, G is edge-transitive if for any two edges e and e ′ of G there is an automorphism of G that sends e to e ′. Background: It is well known that every Cayley graph is vertex transitive, but it is not always edge-transitive. Question: Let C a y ( G, S) be a Cayley graph such that o ( s) = 2 for all s ∈ S ( o ( s) is the order of s ). WebSep 28, 2024 · It is clearly vertex-transitive, since every vertex is a vertex of a square. It is also not edge-transitive, since an edge between two triangles cannot be mapped by an automorphism to an edge next to a square. And it is not edge-flip-invariant, since no automorphism can flip an edge that is next to a triangle that is surrounded by triangles. hemmings motorcycles