Discrete Mathematics with Graph Theory (Classic Version) (3rd Edition) (Pearson Modern Classics for Advanced Mathematics Series)
3rd Edition
ISBN: 9780134689555
Author: Edgar Goodaire, Michael Parmenter
Publisher: PEARSON
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Textbook Question
Chapter 14.2, Problem 1E
Answer the following two questions for each of the directed networks shown.
Show that given flow is not maximum by finding a flow-augmenting chain from s to t. What is the slack in your chain.
Find a maximum flow, given its value, and prove that it is maximum by appealing to Theorem 14.2.2
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Students have asked these similar questions
For the s,t-network with capacities and flows as shown below. What is the value of the
s,t-cut A(X, V \ X) when X = {s, a, c, d, e}?
(3,2)
6,5)
V5,4)
A
(7, 7)
(2,1)
(1, 1)
(22)
(3,2)
4,3)
(4.1)
Let B =
{(1,2, 3), (3, 2, 1), (0,0, 1)}. Show that B is linearly independent and spans
R³. Show all of your work for credit.
(iii) For the network in figure 2 (with the given intial flow), use Ford-Fulkerson to show
it is a maximum flow, identify the min-cut, and explain why this result implies the
original graph is at least 2-edge connected from s to t.
1,1
1,1
1,0
b
1,0
1,1
1,1
1,1
1,1
1,0
d
f
Figure 2: Graph with flow
1,0
1,1
1,1
t
Chapter 14 Solutions
Discrete Mathematics with Graph Theory (Classic Version) (3rd Edition) (Pearson Modern Classics for Advanced Mathematics Series)
Ch. 14.1 - 1. This directed network illustrates a valid -...Ch. 14.1 - Prob. 2TFQCh. 14.1 - Prob. 3TFQCh. 14.1 - Prob. 4TFQCh. 14.1 - Prob. 5TFQCh. 14.1 - Prob. 6TFQCh. 14.1 - Prob. 7TFQCh. 14.1 - Prob. 8TFQCh. 14.1 - Prob. 9TFQCh. 14.1 - Prob. 10TFQ
Ch. 14.1 - Prob. 1ECh. 14.1 - Prob. 2ECh. 14.1 - Prob. 3ECh. 14.1 - Prob. 4ECh. 14.1 - Answer the following questions for each of the...Ch. 14.1 - Prob. 6ECh. 14.1 - Prob. 7ECh. 14.2 - The chain scabt in this network is...Ch. 14.2 - Prob. 2TFQCh. 14.2 - Prob. 3TFQCh. 14.2 - Prob. 4TFQCh. 14.2 - Prob. 5TFQCh. 14.2 - Prob. 6TFQCh. 14.2 - Prob. 7TFQCh. 14.2 - Prob. 8TFQCh. 14.2 - Prob. 9TFQCh. 14.2 - Prob. 10TFQCh. 14.2 - Answer the following two questions for each of the...Ch. 14.2 - 2. Find a maximum flow for each of the networks in...Ch. 14.2 - Prob. 3ECh. 14.2 - Shown are two networks whose arc capacities are...Ch. 14.3 - 1. To solve a maximum flow problem where are...Ch. 14.3 - Prob. 2TFQCh. 14.3 - Prob. 3TFQCh. 14.3 - Prob. 4TFQCh. 14.3 - Prob. 5TFQCh. 14.3 - Prob. 6TFQCh. 14.3 - Prob. 7TFQCh. 14.3 - Prob. 8TFQCh. 14.3 - If T is a tree, there is a unique path between any...Ch. 14.3 - Prob. 10TFQCh. 14.3 - Prob. 1ECh. 14.3 - Prob. 2ECh. 14.3 - 3. Four warehouses, A,B,C and D. with monthly...Ch. 14.3 - 4. Answer Question 3 again, this time assuming...Ch. 14.3 - Prob. 5ECh. 14.3 - Verify Mengers Theorem, Theorem 14.3.1 for the...Ch. 14.3 - Prob. 7ECh. 14.3 - Prob. 8ECh. 14.3 - Prob. 9ECh. 14.3 - Prob. 10ECh. 14.4 - 1. A graph with 35 vertices cannot have a perfect...Ch. 14.4 - 2. The graph has a perfect matching.
Ch. 14.4 - Prob. 3TFQCh. 14.4 - Prob. 4TFQCh. 14.4 - Prob. 5TFQCh. 14.4 - Prob. 6TFQCh. 14.4 - Prob. 7TFQCh. 14.4 - Prob. 8TFQCh. 14.4 - Prob. 9TFQCh. 14.4 - 10. Hall’s marriage Theorem is named after the...Ch. 14.4 - Prob. 1ECh. 14.4 - :Repeat Exercise 1 with reference to the following...Ch. 14.4 - 3. Determine whether the graph has perfect...Ch. 14.4 - 4. Angela, Brenda, Christine, Helen, Margaret,...Ch. 14.4 - Prob. 5ECh. 14.4 - Bruce, Edgar, Eric, Herb, Maurice, Michael,...Ch. 14.4 - Prob. 7ECh. 14.4 - Prob. 8ECh. 14.4 - Suppose v1,v2 are the bipartition sets in a...Ch. 14.4 - Prob. 10ECh. 14.4 - Prob. 11ECh. 14.4 - Prob. 12ECh. 14.4 - Prob. 13ECh. 14.4 - Prob. 14ECh. 14.4 - Prob. 15ECh. 14.4 - Prob. 16ECh. 14 - Prob. 1RECh. 14 - Prob. 2RECh. 14 - Prob. 3RECh. 14 - Prob. 4RECh. 14 - Prob. 5RECh. 14 - 6.For each network, find a maximum flow and...Ch. 14 - 7.(a) Which graph have the property that for any...Ch. 14 - Prob. 8RECh. 14 - Prob. 9RECh. 14 - Prob. 10RECh. 14 - Prob. 11RE
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- Show that the three points (x1,y1)(x2,y2) and (x3,y3) in the a plane are collinear if and only if the matrix [x1y11x2y21x3y31] has rank less than 3.arrow_forwardFind two nonnegative number x and y for which x+3y=30, such that x2y is maximized.arrow_forwardFor which values of t is each set linearly independent? a S={(t,1,1),(1,t,1),(1,1,t)} b S={(t,1,1),(1,0,1),(1,1,3t)}arrow_forward
- No flow networks have an edge directly (back) from t to s. (a) Explain why such an edge is impossible. (b) Suppose such an edge did exist in a network. Explain (using augmenting paths) why any maximum flow would avoid the direct back edge.arrow_forwardTime left 0:08 Given the following general flow pattem of a network, where the flows are all nonnegative, what is the minimum value of x1 and x2? X1=40+x3 X2=160-x3 X3 is free X5=60 O a. X1=40, x2=160 O b. Cannot be determined from given information O . x1=40, x2=0 O d. Xj=0, x2=40 O e x1=160, x2=40 O f. None of the answers is correct Next pagearrow_forward
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