Question

An eccentricity of a node in a connected graph G is the maximum distance from a...

An eccentricity of a node in a connected graph G is the maximum distance from a node in G. A node is central in G when its eccentricity is minimum. Show that a tree has either one or two central nodes.

Hint: The eccentricity of a node in a tree it its maximum distance from some leaf. Suppose all the leaves of a tree are removed (assuming some node(s) remains after this surgery): will this affect the set of central nodes?

Please explain it for me. Thank you

0 0
Add a comment Improve this question Transcribed image text
Request Professional Answer

Request Answer!

We need at least 10 more requests to produce the answer.

0 / 10 have requested this problem solution

The more requests, the faster the answer.

Request! (Login Required)


All students who have requested the answer will be notified once they are available.
Know the answer?
Add Answer to:
An eccentricity of a node in a connected graph G is the maximum distance from a...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Similar Homework Help Questions
  • A balanced binary tree is a binary tree structure in which the left and right subtrees of every node differ

    Data structures C++1- A balanced binary tree is a binary tree structure in which the left and right subtrees of every node differ in height by no more than 1 Out of the following choices, which is the minimum set of nodes, if removed, will make the BST balanced?2- Which of the following is true for Red-Black Trees ? Select all choices that apply! Select one or more: a. For each node in the tree, all paths from that node to any leaf nodes contain...

  • 5) What is the sum of all node degrees, in a graph of 7 nodes connected...

    5) What is the sum of all node degrees, in a graph of 7 nodes connected by 13 edges 6) In a graph of n connected nodes, What is the: - minimum number of edges - maximum number of edges

  • Problem 1: Given a graph G (V,E) a subset U S V of nodes is called...

    Problem 1: Given a graph G (V,E) a subset U S V of nodes is called a node cover if each edge in E is adjacent to at least one node in U. Given a graph, we do not know how to find the minimum node cover in an efficient manner. But if we restriet G to be a tree, then it is possible. Give a greedy algorithm that finds the minimum node cover for a tree. Analyze its correctness...

  • 2. A regular binary tree is a binary tree whose internal nodes all have two subtrees...

    2. A regular binary tree is a binary tree whose internal nodes all have two subtrees (left and right). In other words, all their nodes have either zero subtrees (in which case they are leaves) or two subtrees (in which case they are internal nodes). Suppose that you have a boolean function that tells you, for each node of the tree, whether it is a leaf or not (call it: leaf(n), for node n). a) Write a recursive function that...

  • er (a) Let G be a connected graph and C a non-trivial circuit in G. Prove...

    er (a) Let G be a connected graph and C a non-trivial circuit in G. Prove directly that if an edge ={a, b} is removed from then the subgraph S CG that remains is still connected. Directly' means using only the definitions of the concepts involved, in this case 'connected' and 'circuit'. Hint: If r and y are vertices of G connected by path that includes e, is there an alternative path connecting x to y that avoids e? (b)...

  • Question 1# (a) Let G be a connected graph and C a non-trivial circuit in G. Prove directly that if an edge e fa, b is...

    Question 1# (a) Let G be a connected graph and C a non-trivial circuit in G. Prove directly that if an edge e fa, b is removed from C then the subgraph S C G that remains is still connected. "Directly' means using only the definitions of the concepts involved, in this case connected' and 'circuit'. Hint: If z and y are vertices of G connected by path that includes e, is there an alternative path connecting x to y...

  • Have the explaination please. 4 Graph Application: Network Connectivity (Adapted from Problem 9, Chapter 3 of...

    Have the explaination please. 4 Graph Application: Network Connectivity (Adapted from Problem 9, Chapter 3 of K&T) Think of a communications network as a connected, undi rected graph, where messages from one node s to another node t are sent along paths from s to t. Nodes can sometimes fail. If a node v fails then no messages can be sent along edges incident on v. A network is particularly vulnerable if failure of a single node v can cause...

  • Consider an unweighted, undirected graph G = 〈V, E). The neighbourhood of a node u E V in the gr...

    Consider an unweighted, undirected graph G = 〈V, E). The neighbourhood of a node u E V in the graph is the set of all nodes that are adjacent (or directly connected) to v. Subsequently, we can define the neighbourhood degree of the node v as the sum of the degrees of all its neighbours (those nodes that are directly connects to v) (a) Design an algorithm that returns a list containing the neighbourhood degree for each node v V,...

  • P9.6.3 Prove that a connected undirected graph G is bipartite if and only if there are no edges b...

    P9.6.3 Prove that a connected undirected graph G is bipartite if and only if there are no edges between nodes at the same level in any BFS tree for G. (An undirected graph is defined to be bipartite if its nodes can be divided into two sets X and Y such that all edges have one endpoint in X and the other in Y.) P9.6.3 Prove that a connected undirected graph G is bipartite if and only if there are...

  • Consider an unweighted, undirected graph G = 〈V, E). The neighbourhood of a node u E V in the gr...

    This question needs to be done using pseudocode (not any particular programming language). Thanks Consider an unweighted, undirected graph G = 〈V, E). The neighbourhood of a node u E V in the graph is the set of all nodes that are adjacent (or directly connected) to v. Subsequently, we can define the neighbourhood degree of the node v as the sum of the degrees of all its neighbours (those nodes that are directly connects to v) (a) Design an...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT