Let G be a graph. Suppose there is a vertex v in G with the property that for every vertex w in G there is a vw-path in G. Give a careful proof that for any two vertices u, w ? V(G) there is a path from u to w in G.
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Step 1: Given that there is a vertex v in G such that for every vertex w in G, there is a vw-path in G. Show more…
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