Question: Prove that there exists no 4-regular planar bipartite graph. Prove that the minor relation among finite unidirected simple graphs is transitive. That is, if

Prove that there exists no 4-regular planar bipartite graph. Prove that the

Prove that there exists no 4-regular planar bipartite graph. Prove that the minor relation among finite unidirected simple graphs is transitive. That is, if JH and H G, then J G.

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