(6) Let G be a graph such that for any u, v € V(G), there exists a unique (u, v)-path. Prove that G is a tree.
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- Give a simple example of a connected graph such that an edge (u, v) is a light edge for some cut, but there exists a minimum spanning tree that does not contain (u, v).Give an example to show that if P is a (u, v)-path in a 2-connected graph G, then G does not necessarily contain a (u, v)-path Q internally-disjoint from PLet G₁ and G₂ be two distinct trees with the same vertex-set V. Prove that d(G₁)=d(G₂) if (G₁-x) = (G₂-x) for any x EV.
- Compute the vertex set V and edge set E of the graph G = (V,E) whose Prufer Code is (3, 3, 3,3, 3, 3). Select one: OV={1,2,...,8} and E = {(1,3), (2, 4), (4, 3), (5, 3), (6, 3), (7, 3), (8, 7)} {(1,4), (2, 3), (4, 3), (5, 3), (6, 3), (7, 3), (8, 3)} %3D OV={1,2,..., 8} and E = OV= {1,2,... ,8} and E = {(1, 4), (2, 3), (4, 3), (5, 3), (6, 3), (7, 3), (8, 7)} OV= {1,2,..., 8} and E = {(1,3), (2, 3), (4, 3), (5, 3), (6, 3), (7, 3), (8, 3)} Clear my choiceLet u and v be distinct vertices in a connected graph G. There may be several connected subgraphs of G containing u and v. What is the minimum size of a connected subgraph of G containing u and v? Explain your answer.Draw graph G and its complement, showing that at least one of G and it's complement, G', is connected.
- Prove that if u is a vertex of odd degree in a graph, then there exists a path from u to another vertex v of the graph where v also has odd degree.Prove that If a connected planar simple graph has e edges and v vertices with v ≥ 3 and no circuits of length three, then e ≤ 2v − 4. (Show work)Prove that connecting two nodes u and v in a graph G by a new edge creates a new cycle if and only if u and v are in the same connected component of G.
- let n>=2 be a natural number Let V be the set of people in a party of n people. Use set-builder notation o define E in the undirected graph G=(V,E) where there is an edge between two vertices u and v if the person u and v have met each other. What does the degree of edge in G represent? Prove that there cannot be two vertices u and v in V such that deg(u)=0 and deg(v)=n-1 at the same time. Use part 2 and 3 along with pigeon hole principle to show that in every party of n people, there is always two people who both have met exactly the same number of people.Prove that a simple 2-connected graph G with at least four vertices is 3-connected if and only if for every triple (x, y, z) of distinct vertices and any edge e not incident with y, G has an x, z-path through e that does not contain y.5. Can somcone cross all the bridges shown in this map cxactly once and return to the starting point?