Let n e N with n > 2 and let G, = (V, E) be the graph with vertex set V = {v1, v2, . . . , v2n} and edge set %3D E = {{vi, vi+1} : 1

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
Section: Chapter Questions
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4. Let n eN with n > 2 and let Gn = (V, E) be the graph with vertex set V = {v1, v2, ..., v2n}
and edge set
E = {{v;, Vi+1} : 1<i< 2n – 1} U{v1, v2n} U {{vi, vn+i} |1< i < n}.
These graphs are called "wheel graphs", G2 and G3 are drawn below.
V1
v2
v2
v6
G3
G2
V3
VA
V3
V4
'A dozen is 12
1
Transcribed Image Text:4. Let n eN with n > 2 and let Gn = (V, E) be the graph with vertex set V = {v1, v2, ..., v2n} and edge set E = {{v;, Vi+1} : 1<i< 2n – 1} U{v1, v2n} U {{vi, vn+i} |1< i < n}. These graphs are called "wheel graphs", G2 and G3 are drawn below. V1 v2 v2 v6 G3 G2 V3 VA V3 V4 'A dozen is 12 1
(a) Find the value of |E(Gn)|-
(b) Show that Gn is regular, and find the value of d for which Gn is d-regular.
(c) Find three distinct spanning trees of G, (for the spanning trees to be distinct, their edge
sets must be different).
(Bonus) How many cycles are there containing the vertex v1?
(The bonus part is for bonus marks. If you wish you can submit answers to only parts (a)-(c).
You may need to draw G4 to see the complexity!)
Transcribed Image Text:(a) Find the value of |E(Gn)|- (b) Show that Gn is regular, and find the value of d for which Gn is d-regular. (c) Find three distinct spanning trees of G, (for the spanning trees to be distinct, their edge sets must be different). (Bonus) How many cycles are there containing the vertex v1? (The bonus part is for bonus marks. If you wish you can submit answers to only parts (a)-(c). You may need to draw G4 to see the complexity!)
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