Introduction to Algorithms
Introduction to Algorithms
3rd Edition
ISBN: 9780262033848
Author: Thomas H. Cormen, Ronald L. Rivest, Charles E. Leiserson, Clifford Stein
Publisher: MIT Press
Question
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Chapter 16, Problem 3P

(a)

Program Plan Intro

To prove for thegiven graph G = ( V, E ) which contains matrix M , the M is linearly independent if the set of edges are acyclic.

(b)

Program Plan Intro

To design an efficient algorithm to get the acyclic edges subset with maximum weight.

(c)

Program Plan Intro

To explain the condition that fails to hold the matriod condition for the graph G and associated system ( E, I ).

(d)

Program Plan Intro

To discuss that edges set without directed cycle contains linearly dependent column set of matrix M .

(e)

Program Plan Intro

To prove that satisfying the matriod condition for associated system of the graph G and linear independence of matrix M are not contradictory.

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Given the adjacency matrix of an undirected simple graph G = (V, E) mapped in a naturalfashion onto a mesh of size n2, in Ī˜(n) time a directed breadth-first spanning forest T = (V, A) can becreated. As a byproduct, the undirected breadth-first spanning forest edge set EA can also be created,where EA consists of the edges of A and the edges of A directed in the opposite direction.
Consider the following pair of adjacency matrices.1. Draw the simple graphs associated with each of the above adjacency matrices.2. Check whether those two simple graphs are isomorphic. Show your work. 1Ā  0Ā  1Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā 1Ā  1Ā  0Ā  0Ā  1Ā  1Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā 1Ā  0Ā  1Ā  1Ā  1Ā  0Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā  Ā 0Ā  1Ā  1
Transitive ClosureThe transitive closure of a graph G = (V, E) is defined as the graph G = (V, E)with edge (u, v) āˆˆ E if there is a path between the vertices u and v in G. Thus, fora connected graph which has paths between every vertex pairs it has, its transitiveclosure is a complete graph. The connectivity matrix of a graph G is a matrix C withentries C[i, j] having a unity value if there exists a path between vertices i and jin the graph G. Finding the connectivity matrix of a graph G is basically findingthe adjacency matrix of its transitive closure. We will see other ways of finding theconnectivity matrices of directed and undirected graphs in Chap.8.Warshallā€™s algorithm to find the transitive closure of a graph works similar to finding distances using Floyd-Warshall algorithm, however, logical and and logical oroperations are used instead of multiplication and addition performed during normalmatrix multiplication.Python ImplementationPython implementation of this algorithm
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