1. Give a condition that is necessary but not sufficient for an undirected graph to have an Eulerian Path. Justify your answer.
2. Give a condition that is sufficient but not necessary for an undirected graph not to have an Eulerian Cycle. Justify your answer.
1. Give a condition that is necessary but not sufficient for an undirected graph to have an Eulerian Path. Justify your...
Give a condition that is sufficient but not necessary for an undirected graph not to have an Eulerian Cycle. Justify your answer.
1- Give an example (by drawing or by describing) of the following undirected graphs (a) A graph where the degree in each vertex is even and the total number of edges is odd (b) A graph that does not have an eulerian cycle. An eulerian cycle is a cycle where every edge of the graph is visited exactly once. (c) A graph that does not have any cycles and the maximum degree of a node is 2 (minimum degree can...
Given an undirected connected graph, give an efficient algorithm for generating a path that traverses each edge exactly twice. Explain the order of your algorith
Look up the definition of a biconnected undirected graph on Wikipedia. Give a one sentence definition based on induced sub-graphs. Start your definition with “An undirected graph G = (V, E) is biconnected, if . . . ” (b) For a directed graph G = (V, E), its underlying undirected graph is obtained by replacing every directed edge (u, v) with an undirected one {u, v}. (If (u, v) and (v, u) are both in E, then the underlying undirected...
Prove the claim. Consider an undirected graph G with minimum degree δ(G) ≥ 2. Then G has a path of length δ(G) and a cycle with at least δ(G) + 1 vertices.
Reachability. You are given a connected undirected graph G = (V, E ) as an adjacency list. The graph G might not be connected. You want to fill-in a two-dimensional array R[,] so that R[u,v] is 1 if there is a path from vertex u to vertex v. If no such path exists, then R[u,v] is 0. From this two-dimensional array, you can determine whether vertex u is reachable from vertex v in O(1) time for any pair of vertices...
Consider the following undirected weighted graph where you want to find a path from A to G. A / \ B --- C \ / \ G --- H Weights (costs) of the edges are W(AB) = 1; W(AC) = 3; W(BC) = 1; W(BG) = 9; W(CG) = 5; W(CH) = 2; W(GH) = 1, and the heuristic estimates (h(n)) to the goal node, G, are h(A) = 5, h(B) = 4, h(C) = 1, h(G) = 0, h(H)...
Say that we have an undirected graph G(V, E) and a pair of vertices s, t and a vertex v that we call a a desired middle vertex . We wish to find out if there exists a simple path (every vertex appears at most once) from s to t that goes via v. Create a flow network by making v a source. Add a new vertex Z as a sink. Join s, t with two directed edges of capacity...
A graph with n nodes is connected, undirected, and acyclic. How many edges must it have? (Select the answer from the following options and prove your choice): a) n b) n*(n-1) c) n- 1 d) n/2 - 1
7. Graphs u, u2, u3, u4, u5, u6} and the (a) Consider the undirected graph G (V, E), with vertex set V set of edges E ((ul,u2), (u2,u3), (u3, u4), (u4, u5), (u5, u6). (u6, ul)} i. Draw a graphical representation of G. ii. Write the adjacency matrix of the graph G ii. Is the graph G isomorphic to any member of K, C, Wn or Q? Justify your answer. a. (1 Mark) (2 Marks) (2 Marks) b. Consider an...